What will be the difference between the compound interest and the simple interest on a sum of 1000 for 2 years at 5% per annum?

The side of a trapezium pyramid with a square base is 24 cm. and its height is 5 cm. What will be the area of its oblique surface in cm²?

What will be the compound interest on Rs 10000 for 3 years when the rate of interest is 4% in the first year, 5% in the second year and 6% in the third year?

The average score of 14 students was calculated as 71. But later it was found that marks of one student were recorded as 42 instead of 56 and as 74 instead of 32 of the other. Correct average?

A trader buys a hand watch for Rs.450 and determines its marked price in such a way that even after allowing a discount of 10% on that watch, he makes a profit of 20%. What is the marked price of the watch?

How many kilometers will a person riding on a scooty cover in 3 hours 20 minutes at a speed of 5 meters per second?

Ajay spends 25% of his salary on house rent, 5% food grains, 15% on travel and 10% on clothes and saves Rs 27000, what is Ajay's monthly income?

If there is an increase of 25% in edible oils, by what percent should a housewife reduce her consumption of oil so that the expenditure on this item does not increase?