Quantitative Aptitude - Arithmetic Ability Questions

If the radius of a circle is increased by 25%, its area increases by:

Find the number which multiplied by 15 is increased by 56  ?

A and B invest in a business in the ratio 2 : 5. If 50% of the total profit goes to charity and A's share is Rs 3.6 lakhs, the total profit is Rs __________ lakhs.

A group consists of 4 couples in which each of the 4 boys have one girl friend.In how many ways they can be arranged in a straight line such that boys and girls occupies alternate positions?

A student multiplied a number by 5/6 instead of 6/5. What is the percentage error in the calculation?

A, B and C are three students. A got 36% less marks than B and 16% more marks than C. If B got 145 marks, then what are the marks got by C?

Find the compound amount if $2900 is deposited at 5% interest for 10 years if interest is compounded daily

The average weight of L, M and N is 93 kg. If the average weight of L and M be 89 kg and that of M and N be 96.5 kg, then the weight (in kg) of M is ________.