Quantitative Aptitude - Arithmetic Ability Questions

If 2/3(6x/5 - 1/4) + 1/3 = 9x/5, then what is the value of x?

If a2+b2=80 and ab = 32, then calculate the value of a-b/a+b.

The average of marks of 17 students in an examination was calculated as 71. But it was later found that the mark of one student had been wronglyentered as 65 instead of 56 and another as 24 instead of 50. The correct average is

The ratio of the cost price and selling price of a bulb is 15 : 18. What is the profit percentage?

A train travelling at the speed of 66 kmph crosses a 300 m long platform in 24 seconds. How long was the train?

Amit can complete a work in 25 days and Punit can complete the same work in 20 days. Punit alone worked at it for 10 days and then left the work. In how many days will Amit alone complete the remaining work?

The simple interest accrued on a sum of money at the end of four years is 1/5th of its principal. What is the rate of interest per annum?

What is the remainder when 2468 is divided by 37?