Quantitative Aptitude - Arithmetic Ability Questions

The simple and compound interest that can be earned in two years at the same rate is Rs 1500 and Rs 1575 respectively. What is the rate (% per annum) of interest?

If 192 pens cost is Rs.10, how many pens can be bought for Rs.5?

How much does one need to add to 2/3 to obtain 3/2?

A can do a piece of work in 8 days and B can do it in 10 days seperately. How many days would it take for both A and B to finish the same work together?

A number exceeds its 1/6 by 30. What is the number?

In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

A balloon leaves from a point P rises at a uniform speed. After 6 minutes, an observer situated at a distance of 450√3 metres from point P observes that angle of elevation of the balloon is 60 deg. Assume that point of observation and point P are on the same level. What is the speed (in m/s) of the balloon?

Akash's monthly income is Rs. 9600. His monthly expenditure is 60% of his income. What is his saving per month?