Recent questions tagged class6

If a and b are two whole numbers, then commutative law is applicable to subtraction if and only if .

asked Aug 1, 2016 by meena.p

2 answers

Which of the following expression in INCORRECT ?

asked Aug 1, 2016 by meena.p

1 answer

Subtract the number obtained by reversing the digits of the number $20198$ from the number obtained by interchanging the digits in the units place and the hundred's place of the same number , we get

asked Aug 1, 2016 by meena.p

1 answer

While removing brackets, the order in which the brackets are removed is __________

asked Aug 1, 2016 by meena.p

1 answer

Find the sum of the given expression. $(-172)+40+5+(-425) +(-275)+600-(-15)$

asked Aug 1, 2016 by meena.p

2 answers

A tap fill a tank in 12 min. at the rate of 6 litre/min. another tap empties the tank in 36 min. How much remains in the tank after 10 min. ?

asked Dec 8, 2014 by pady_1

0 answers

Two pipes P and Q can fill a tank in 12 min. and 16 min. respectively. If both the pipes are opened simultaneously, after how much time Q should be closed so that the tank is full in 6 minutes ?

asked Dec 8, 2014 by pady_1

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Two pipes P and Q can fill a tank in 45 min. and 36 min. respectively. A water pipe can empty the tank in 30 min. First P and Q are opened. After 7 minutes, R is also opened. In how much time, the tank in full ?

asked Dec 8, 2014 by pady_1

0 answers

Two taps fill in tank in 20 hours. and 10 hours. Two taps are opened first. After how much time the second tap should be closed off so that the tap full in 14 hours ?

asked Dec 8, 2014 by pady_1

0 answers

Two pipes can fill a cistern in 8 hours and 7 hours respectively. The pipes are opened simultaneously and it is found that due to leakage in the bottom it took 16 minutes more to fill the cistern. When the cistern is full, in what time the leak empty it ?

asked Dec 8, 2014 by pady_1

0 answers

An electric pump can fill a tank in 6 hours. Because of a leak in the tank, it took 7 hours to fill the tank. If the tank is full, how much time will the leak take to empty it ?

asked Dec 8, 2014 by pady_1

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One tap can fill a tank 10 hours. And another tap can empty the tank in 15 hours. How much time does it take to fill the tank if both pipes are opened ?

asked Dec 8, 2014 by pady_1

0 answers

Two pipes fill in a tank in 10 min. and 15 min. respectively. If both pipes are opened how much time does it take to fill the tank ?

asked Dec 8, 2014 by pady_1

0 answers

If two pipes function simultaneously, the reservoir will be filled in 6 hours. One pipe fills the reservoir 5 hours faster than the other. How many hours does it take the second pipe to fill the reservoir ?

asked Dec 8, 2014 by pady_1

1 answer

Two pipes P and Q can fill a tank in 22.5 hours and 18 hours respectively. If both the pipes are opened simultaneously, how much time will be taken to fill the tank ?

asked Dec 8, 2014 by pady_1

0 answers

Pranav does a work in 6 days and Suman does the same work in 14 days. In how many days they together will do the same work?

asked Dec 8, 2014 by pady_1

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The efficiency of Lohith and Lokesh are 3 : 2, the no. of days they can finish a work will be in ratio ?

asked Dec 8, 2014 by pady_1

1 answer

A work can be done by Arun and Balu is 15 days; by Balu and Chandan in 20 days and by Chandan and Arun in 30 days. In how many days can Chandan alone do the work ?

asked Dec 8, 2014 by pady_1

0 answers

Darshan and Ganesh can do a work independently in 20 days and 30 days. They two started the work, 2 days before completion of the work both Darshan and Ganesh dropped from the work. The remaining work was completed by Kalyan in 10 days. In how many days, Kalyan alone can do the work ?

asked Dec 8, 2014 by pady_1

0 answers

Vijay and Subbu can do a work independently in 20 days and 24 days. Subbu started the work and did for 6 days. The remaining work was done by Vijay in how many days?

asked Dec 8, 2014 by pady_1

1 answer

Ashish can do 1/2 of a work in 10 days and Karthik can do 1/3rd of the same work in 8 days. What is the ratio of their capacities ?

asked Dec 8, 2014 by pady_1

1 answer

Paul and Johnson undertake to do piece of work for Rs. 2400. Paul alone can do it in 12 days. While Johnson alone can do it in 16 days. With the help of Clinton, they finish it in 6 days. Find the share of Johnson.

asked Dec 8, 2014 by pady_1

0 answers

Antony can do a certain job in 21 days. David is 40% more efficient than Antony. How many days does David alone take to do the same job?

asked Dec 8, 2014 by pady_1

0 answers

If Atmika and Bhagya together can complete a piece of work in 8 days. If Atmika alone can complete the same work in 24 days, in how many days can Bhagya alone complete that work?

asked Dec 8, 2014 by pady_1

1 answer

Jayaram takes 6 hours to do a job. Rajesh takes 9 hours to do the same job. How long should it take both Jayaram and Rajesh, working together but independently, to do the same job?

asked Dec 8, 2014 by pady_1

0 answers

A train 280 metres long is running at a speed of 64 km/hr. If it crosses a tunnel in 45 seconds, then the length of the tunnel (in metres) is :

asked Dec 8, 2014 by pady_1

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A train 120 m long passed a pole in 12 seconds. How long will it take to pass a platform 450 m long ?

asked Dec 8, 2014 by pady_1

0 answers

A train covers a distance of 6 km in 5 minutes. If it takes 10 seconds to pass a telegraph post, then the length of the train is :

asked Dec 8, 2014 by pady_1

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A train running at the speed of 72 km/hr crosses a pole in 11 seconds. What is the length of the train ?

asked Dec 8, 2014 by pady_1

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How long does a train 115 metres long running at the speed of 90 km/hr. take to cross a bridge 135 metres in length ?

asked Dec 8, 2014 by pady_1

1 answer

In what time will a train 140 metres long cross an electric pole, if its speed be 126 km/hr.

asked Dec 8, 2014 by pady_1

0 answers

Two trains 110 metres and 130 metres long are running in the same direction with speeds of 86 km/hr and 68 km/hr. In how much time will the first train cross the second ?

asked Dec 8, 2014 by pady_1

1 answer

Find the length of the train if it takes 15 sec, travelling at 54 km/hr to cross a man standing beside the track.

asked Dec 8, 2014 by pady_1

0 answers

A train is moving at a speed of 108 km/hr. If the length of the train is 120 metres, how long will it take to cross a railway platform 180 metres long ?

asked Dec 8, 2014 by pady_1

1 answer

A train 120 m long is running at the speed of 54 km/hr. Find the time taken by it to pass a man standing near the railway line.

asked Dec 8, 2014 by pady_1

1 answer

Raju takes 1.5 hours more than Ramu for covering a distance of 20 km. If Raju doubles his speed, then he would take 1 hour less than Ramu. Raju's speed is:

asked Dec 8, 2014 by pady_1

0 answers

Raman was going to Bangalore to Chennai on a Bus. He found out that including stoppages, the speed of the bus is 36 kmph and excluding stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?

asked Dec 8, 2014 by pady_1

0 answers

A man driving a car was travelling with some constant speed and covered a certain distance. If the speed of the car was increased by 3 kmph, then the journey time was reduced by 40 minutes. If the speed of the car had been reduced 2 kmph slower, then he would have taken 40 minutes more. Find the distance covered (in km) by the car?

asked Dec 8, 2014 by pady_1

0 answers

A train when moves at an average speed of 60 kmph, reaches its destination on time. When its average speed becomes 45 kmph, then it reaches its destination 30 minutes late. Find the length of journey.

asked Dec 8, 2014 by pady_1

0 answers

One day, a boy from his house walks at a speed of 5 km/hr and reaches his school 2 minutes late. Next day he increases his speed by 1 km/hr and reaches the school 2 minutes early. How far is the school from his house ?

asked Dec 8, 2014 by pady_1

0 answers

A boy can reach a certain place in 15 hours. If he reduces his speed by 1/30th, he goes 3 km less in that time. Find his speed.

asked Dec 8, 2014 by pady_1

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A bus travels the first 1/3 of a certain distance with a speed of 20 km/hr, the next 1/3 distance with a speed of 40 km/hr, and the last 1/3 distance with a speed of 120 km/hr. Find the average speed of the bus for the whole journey ?

asked Dec 8, 2014 by pady_1

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A cab driver travels first 80 km at 30 km/hr and the next 80 km at 40 km/hr. Find the average speed for the first 160 km of the journey is:

asked Dec 8, 2014 by pady_1

0 answers

A boy goes to his play ground from his home at a speed of 2 km/hr. He comes back from the play ground to his home at a speed of 1km/hr. The total time taken for both the journey is 6 hours, then find the distance between his home and playground?

asked Dec 8, 2014 by pady_1

0 answers

A farmer travels from X to Y at a speed of 20 kmph. He came back from Y to X by increasing his speed by 50%. What is his average speed for both the trips ?

asked Dec 8, 2014 by pady_1

0 answers

A man covered a distance of 43 km in 9 hours. He traveled some distance on foot at a speed of 2 km/hr and some distance on bicycle at a speed of 12 km/hr. The distance traveled on foot is:

asked Dec 8, 2014 by pady_1

0 answers

The speed of the van increases by 3 kms after every one hour. If the distance traveled in the first one hour was 50 kms. What was the total distance traveled in 10 hours ?

asked Dec 8, 2014 by pady_1

0 answers

A bus covers a distance of 66 kms in 90 minutes where as a truck covers a distance of 1100 metres in 2 minutes. The ratio of their speeds is :

asked Dec 8, 2014 by pady_1

1 answer

A bus is running at a speed of 90 km/hr. What distance will it cover in 35 seconds ?

asked Dec 8, 2014 by pady_1

0 answers

A car moves at the speed of 72 km/hr. Find the speed of the car in metres per second ?

asked Dec 8, 2014 by pady_1

0 answers

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