Quantitative Aptitude - Arithmetic Ability Questions

Find the volume (in cub.cm) of a sphere of diameter 42 cm

If two flood gates A and B function simultaneously, the reservoir will be filled iu 6 hours. Gate A fills the reservoir 5 hours faster than gate B. How many hours does the faster flood gate take to fill the reservoir?

What is the rate of interest (in %) if simple interest earned on a certain sum for the 3rd year is Rs 2,000 and compound interest earned in 2 years is Rs 4,160?

A man spends 59% of his income and saves the rest. What percentage of his expenditure does he save?

If the selling price is Rs 855 after getting a discount of 5%, what was the marked price?

If the selling price is Rs 2125 after getting a discount of 15% what was the marked price?

If a sum of Rs.12500 is invested for 1 year at 12% per annum interest being compounded semi­-annually, then interest earned is

By selling 175 pineapples, the gain is equal to the selling price of 50 pineapples. What is the gain percentage?