Quantitative Aptitude - Arithmetic Ability Questions

A boy spends Rs 20 to purchase toffees at Rs 1 each. Next day, he purchased some toffees for Rs 40 with a discount of 50 paise per toffee. What is the average price per toffee (in paise)?

A and B can do a piece of work in 72 days. B and C can do it in 120 days and A and C can do it in 90 days. A alone can do it in:

35% of an alloy was silver. If in the quantity of alloy there was 119 g of silver, what was the quantity of the elements in the alloy?

If the standard deviation of a population is 6.5, what would be the population variance?

Find the odd word/letters/number from the given alternatives.

What is the equation of the line which has 3/2 and -­4/7 as x and y intercept respectively?

If tanA = x, then x is

What is the difference (in Rs) between compound interest (compounded annually) and simple interest for 3 years on a principal of Rs 3000 at the annual rate of 20%?