Quantitative Aptitude - Arithmetic Ability Questions

At what rate of compound interest per annum will a sum of Rs 20000 become Rs 25088 in 2 years?

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

Which of the following numbers is a perfect square?

In ∆ABC, ∡A + ∡B = 75 and ∡B + ∡C = 140, then ∡B =

The value of 1+tan2∅(1-sin2∅) is

Raghavendra sells a machine for Rs 43 lakhs at a loss. Had he sold it for Rs 52 lakh, his gain would have been 5 times the former loss. Find the cost price of the machine.

7 litres mixture of milk and water contains 30% water. 3.5 litres of milk is added to this mixture. What is the percentage of water in the new mixture?

A, B and C can do a job working alone in 6, 9 and 18 days respectively. They all work together for 1 day, then A and B quit. How many days C working alone will take to complete the remainder of the job?