If each side of a cube is increased by 10%. Then find the percent change in the volume of the cube.

A sum of money becomes double in 3 years at compound interest compounded annually at the same rate. In how many years will it become four times of itself? 

$$ {\sqrt{5929}}+\sqrt{8464}=(?)^{2}$$

A travels 25% faster than B. They started their journey from a point P to another point Q and reach at the same time on point Q. Distance between P and Q is 85 km. On the way, however, A lost about 20 minutes while stopping for petrol. What was the speed of B?

The HCF of three numbers 98, 175 and 210 will be:

A boat covers a certain distance against the stream in 9 hours 36 min and it covers the same distance along the stream in 6 hours. What is the ratio of the speed of the boat in still water to that of the stream?

The following pie chart gives the central angles of the sectors representing the number of cameras sold form a shop from July to November in a certain Year.

what percentage are the sales in July of the total sales from July to November

An article is sold Rs.680 after two successive discounts of 20% and x% on its marked price. The marked price of the article is Rs.1000. What is the value of x?