Recent questions in Class 8

Factorize : $r^2 -10 r +21$ is

asked Aug 13, 2015 by meena.p

1 answer

Factorize : $25a^2-4b^2+28bc-49c^2$

asked Aug 13, 2015 by meena.p

1 answer

Solve: $3ab- 6bc+4ad-8cd$

asked Aug 13, 2015 by meena.p

1 answer

Factorize : $16x^5 -81 x$

asked Aug 13, 2015 by meena.p

1 answer

Solve: $(2x+3y)^2 -16 z^2$

asked Aug 13, 2015 by meena.p

1 answer

Divide $24x^2y^2z^2$ by $6yz$

asked Aug 13, 2015 by meena.p

1 answer

Factorize : $5a^3- 2a^2 +5a-2$

asked Aug 13, 2015 by meena.p

1 answer

Factorize: $abx^2 +(ay-b)x-y$

asked Aug 13, 2015 by meena.p

1 answer

$x^2-2ax+2ab-bx$

asked Aug 13, 2015 by meena.p

1 answer

Divide $x(5x^2-80)$ by $5x(x+4)$

asked Aug 13, 2015 by meena.p

1 answer

Divide $(7a^2+14a)$ by $(a+2)$

asked Aug 13, 2015 by meena.p

1 answer

Solve: $(5a^2-10a^2b)$

asked Aug 13, 2015 by meena.p

1 answer

Solve: $5xy- 15 x^2 y +20 xy ^2$

asked Aug 13, 2015 by meena.p

1 answer

Factorize: $4a^2b - 6ab^2$

asked Aug 13, 2015 by meena.p

1 answer

Factorize : $x^2+10x+25$

asked Aug 13, 2015 by meena.p

1 answer

Factorize : $12a^2b+15ab^2$

asked Aug 13, 2015 by meena.p

1 answer

Division is opposite of

asked Aug 13, 2015 by meena.p

1 answer

Factorize: $2a-32a^5$

asked Aug 13, 2015 by meena.p

1 answer

Factorize $9a^2-16b^2$

asked Aug 13, 2015 by meena.p

1 answer

Factorize : $(x^2+x^3+x+1) \div (x+1)$

asked Aug 13, 2015 by meena.p

1 answer

Factorize: $16 l^2m^2 -(64lm)$

asked Aug 13, 2015 by meena.p

1 answer

Factorize: $x^8 -y^8$

asked Aug 13, 2015 by meena.p

1 answer

Factorize $128ax^2 -242ay^2$

asked Aug 13, 2015 by meena.p

1 answer

Factories $16 (x+y)^2-40 (x+y)(x-y)+2y(x-y)^2$

asked Aug 13, 2015 by meena.p

1 answer

Factories : $x^2+2 \sqrt {3} x+3$

asked Aug 12, 2015 by meena.p

1 answer

Factorize : $ab(x^2+1)+x(a^2+b^2)$

asked Aug 12, 2015 by meena.p

1 answer

Factorize : $ap^2+bp^2+aq^2+bq^2$

asked Aug 12, 2015 by meena.p

1 answer

At a party 8 bottles of soft drink are saved for every batch of 5 children . How many bottles would be served if 40 children were present in the party ?

asked Aug 12, 2015 by meena.p

1 answer

If 20 men consume a certain quantity of rice in 14 days , in how many days will same consume the same quantity of rice.

asked Aug 12, 2015 by meena.p

1 answer

15 chairs can be bought for $Rs. 3532$ How many chairs can be bought for $Rs. 5416.50$

asked Aug 12, 2015 by meena.p

1 answer

Cost of 3 geometry boxes is $Rs. 31.50$ What is the cost of 10 geometry boxes

asked Aug 12, 2015 by meena.p

1 answer

7 pen cost $Rs. 56$ What is the cost of $21$ pen

asked Aug 12, 2015 by meena.p

1 answer

5 men can do a work in 10 days . In how many days will one man complete the work .

asked Aug 12, 2015 by meena.p

1 answer

If it would take 4 people, 15 hours to clear the trees from some land , how many people will be needed to complete the job in 6 hrs.

asked Aug 12, 2015 by meena.p

1 answer

Harsh takes 10 steps in walking a distance of 125 meters. What distance would be cover in $360$ steps

asked Aug 12, 2015 by meena.p

1 answer

The amount of extension in an eleastic spring varies directly as the weight hung on it. If a weight of $150\;g$ produces an extension of $2-9\; cm$ then what weight would produce an extensiion of $17.4$ cm

asked Aug 12, 2015 by meena.p

1 answer

45 baskets are required to carry $2835$ mangoes. How many baskets will be required to carry 6615 mangoes

asked Aug 12, 2015 by meena.p

1 answer

A besieged town has provisions to last for 3 weeks. Its populations is $22400$ how many people must be sent away in order that the provision may last for 7 weeks.

asked Aug 12, 2015 by meena.p

1 answer

A hostel had rations for $60\; days$ for $500$ students . After 12 days 300 more students join thr hostel . How long will the remaining ration last .

asked Aug 12, 2015 by meena.p

1 answer

It is found that a book will contain $350 pages$ if $32$ lines are allowed in a page how many lines should be allowed in a page, if the book is to contain 280 pages .

asked Aug 12, 2015 by meena.p

1 answer

Two and a half liters of paint are used to cover $725\;m^2$ of area. How much will be required to paint $2001\;m^2$ of area

asked Aug 12, 2015 by meena.p

1 answer

A journey of $552\;km$ takes 6 days . How long will a journey pf 1012 km take , if it is done at the same rate?

asked Aug 12, 2015 by meena.p

1 answer

16 articles cost $Rs. 72$ . What will be the cost of 50 articles

asked Aug 12, 2015 by meena.p

1 answer

A and B together can do a price of work in 8 days , but A alone can do it in 12 days . how many days would B alone take to do the same work

asked Aug 12, 2015 by meena.p

1 answer

A fort has provision for 150 men for 45 days After 10 days 25 men left the fort . How long will the food last at the same rate?

asked Aug 12, 2015 by meena.p

1 answer

Seema cycles to her school at an average speed of $12\;km/hr$ It takes her 20 min to reach the school. If she wants to reach school in 15 mins , What will be her average speed.

asked Aug 12, 2015 by meena.p

1 answer

$22 \large\frac{1}{2}$ $m$ of silk costs $Rs. 214.20$ What is the cost of $6 \large\frac{3}{4}$ $m$

asked Aug 12, 2015 by meena.p

1 answer

A scooter consumes 28 liter of petrol in covering a distance of 2100 km . How much petrol will be needed to cover a distance of $3600\;km$

asked Aug 11, 2015 by meena.p

1 answer

12 bags of wheat weight 90 kg . how much will 20 bags weight ?

asked Aug 11, 2015 by meena.p

1 answer

Two persons could fit new window in a house in 8 days . One of the persons fell ill before the work started . How long would the job take now ?

asked Aug 11, 2015 by meena.p

1 answer

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