Quantitative Aptitude - Arithmetic Ability Questions

If X2+4y2+z2-4x-2z+5-0, then find the value of y15+x5z14

The average revenues of 13 consecutive years of a company is Rs 82 lakhs. If the average of first 7 years is Rs 77 lakhs and that of last 7 years is Rs 89 lakhs, find the revenue for the 7th year.

Ms. Alina borrowed Rs.650 at 6% per annum simple interest. What amount will she pay to clear her debt after 4 years?

The interest earned on Rs. 3675 at the rate of 4% simple interest per annum for 2 years will be

The number of students in a class is increased by 20% and the number now becomes 66. Initially the number was

If  x=2+32-3, then what is the value of x+1/x ?

The product of two numbers is 40. One of them is 2.50. What is the other number?

Pipe A can fill an empty cistern in 4 hours while along with Pipe B it can fill it up in 3 hours. Only Pipe A is turned on for an hour after which Pipe B is also turned on. How much total time will it take to fill up the cistern?