Recent questions in Math

The average of $6,8,10,13,15, x$ is $11.5$. What is the median ?

asked Jan 22, 2019 by meena.clay6

1 answer

The mean of $a,b$ and $c$ is $12$. If $b=3a$ and $c=7$ find the value of $a$ .

asked Jan 22, 2019 by meena.clay6

1 answer

Mrs. Marina teaches 4 different math classes. The first class contains 32 students, the second class contains 22 students, the third class contains 24 students and the fourth class contains 30 students. What is the mean number of students per class ?

asked Jan 22, 2019 by meena.clay6

1 answer

The mean of b and c is 25 and the mean of a and d is 20. What is the mean of a,b, c and d ?

asked Jan 22, 2019 by meena.clay6

1 answer

Dave can paint $y$ square feet of walkway per minute. What area can Dave paint in 5 hours ?

asked Jan 21, 2019 by meena.clay6

1 answer

The value of $b$ varies directly with the cube of $a$ and square of $c$. If $b$=125 when $a$=5 and $c$=25, what will be the value of $b$ if $a=2$ and $c=4$

asked Jan 21, 2019 by meena.clay6

1 answer

If $m$ and $n$ are positive integers and $4^m=64^n$ then the ratio of $m:n$ is

asked Jan 21, 2019 by meena.clay6

1 answer

The regular rate of full body massage at a spa clinic is $\$50$ per session. The clinic currently offers a special package of $\$240$ for 6 sessions. What percentage does a customer taking up this offer save for 6 sessions ?

asked Jan 21, 2019 by meena.clay6

1 answer

Scientific estimates that the pacific plate one of Earth's tectonic plate, has moved about $1075\; kms$ in the past $10.4$ million years. What was the average speed of the pacific plate during the time period in centimeter per year?

asked Jan 21, 2019 by meena.clay6

1 answer

At a summer camp, 80 children take up sailing class , 25 children take pottery class, 90 children do not take either sailing or pottery classes. What is the total number of children in the camp ?

asked Jan 3, 2019 by meena.clay6

1 answer

There are 40 oranges and 10 peaches in a bin. If only oranges are to be removed from the bin so that the probability of randomly drawing an orange becomes $\large\frac{3}{5}$ how many oranges must be subtracted from the bin ?

asked Jan 3, 2019 by meena.clay6

1 answer

There are 6000 employees in a company. One of them is selected at random to win a bike. If the probability that an officer will be selected is $\large\frac{4}{15}$, how many officers are working in that company ?

asked Jan 3, 2019 by meena.clay6

1 answer

Let $x$ be the sum of the first 30 consecutive positive even integer and $y$ be the sum of the first 30 consecutive positive integer . What is x in term of $y$ ?$x=2+4+6+....60,y=1+2+3+.....+30$

asked Jan 3, 2019 by meena.clay6

1 answer

How many different sums can be made by adding any two different numbers in the list given below $\{1,2,4,8,16,32,33\}$?

asked Jan 3, 2019 by meena.clay6

1 answer

The average , median and mode are calculated for the list $(3,3,7,10,12)$. If 1 is added to the list which of the following would change? I) The average II) The median III) The mode

asked Jan 3, 2019 by meena.clay6

1 answer

In the list of numbers $7,x,10,12,2,8,13$ the median is 10 . Which of the following could not be the value of x?

asked Dec 31, 2018 by meena.clay6

1 answer

The average of x,y and z is 5. if $x+y=30$ then z is equals

asked Dec 17, 2018 by meena.clay6

1 answer

Dave has a jar full of coins . He has 25 quarters , 15 times , 20 nickels and 55 permies. If he order them all from least to most valuable, what is value of the median ?

asked Dec 17, 2018 by meena.clay6

1 answer

The median of the set of numbers $(5,20,52,55,100,25,22)$ is

asked Dec 17, 2018 by meena.clay6

1 answer

In the following set of numbers, by how much does the arithmetic mode exceed the mean $\{3,3,7,9,9,7,5,7,9,7,3\}$

asked Dec 17, 2018 by meena.clay6

1 answer

The Minnesota area has the following weather in $^{\circ}F$ . What is the difference between the high temperature average and the low temperature average over the three days ?

asked Dec 17, 2018 by meena.clay6

1 answer

Emy travelled 120 miles on day 1, 115 miles on day 2 and 113 miles on day 3. How many miles per day did she travel on an average ?

asked Dec 17, 2018 by meena.clay6

1 answer

In the figure $AP$ is a tangent to the circle with centre $O$ such that $OP= 4\;cm$ and $\angle {OPA} = 30^{\circ}$. Then AP

asked Dec 15, 2018 by priyanka.c

1 answer

The average of 4 consecutive even numbers is 40. What is the value of the least of the 4 numbers ?

asked Dec 14, 2018 by meena.clay6

1 answer

In a certain class there are 15 girls and 20 boys. If the average height of the girls is $x$ and average height of boy is $y$, what is the average height of all the boys and girls in the class ?

asked Dec 13, 2018 by meena.clay6

1 answer

Mike takes 25 minutes to run around the track. He takes a second loop and it takes him 30 minutes. If the track is 10 miles long , what is his average speed in miles per hour ?

asked Dec 13, 2018 by meena.clay6

1 answer

The average of $x,y$ and $z$ is 9. If $x+y=20$ then $z$ is equals

asked Dec 13, 2018 by meena.clay6

1 answer

If PA and PB are tangents from outside point P such that PA = 10 cm and $\angle{APB}= 60^{\circ}$. Find the length of chord AB.

asked Dec 6, 2018 by priyanka.c

1 answer