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Let A and B be two solid spheres such that the surface area of B is 300% higher than the surface area of A. The volume of A is found to be k% lower than the volume of B. The value of k must be ?

Raju and Lalitha originally had marbles in the ratio 4:9. Then Lalitha gave some of her marbles to Raju. as a result, the ratio of the number of marbles with Raju to that of with Lalitha became 5:6. what was the fraction of her original marbles was given to raju by Lalitha.

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The Number of integers n that satify the inequalities |n-60|

Solving questions in study room is quite tougher than solving in quant and verbal rush. Which one is best to improve fast

let A and B be two solid spheres such that the surface area of B is 300% higher than the surface area of A. the volume of A is found to be k% lower than the volume of B. then the volume of k must be

a. 85.5
b. 92.5
c.90.5
d. 87.5

The salaries of Ramesh, ganesh and rajesh were in the ratio of 6:5:7 in 2010 and in the ratio 3:4:3 in 2015. If Ramesh's salary increases by 25% during 2010-2015, then the percentage increase in Rajesh's salary during this period is closest to ?