Quantitative Aptitude - Arithmetic Ability Questions

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

Given 17 x 29 = 493, then 170 x 0.029 = ?

Two successive discounts of 12% and 20% are given by Rajat on a shirt. If the marked price of the shirt is Rs 500, then what is the value (in Rs) of discount?

Vikash purchased 5 bananas for Rs.4 and sold 4 bananas for Rs.5. Calculate his % profit?

John is 15 years younger than Jill, 12 years ago, Jill's age was 1.5 times that of John. Jill is now ___ years old.

If the sum of squares of two real numbers is 41 and their sum is 9. Then the sum of cubes of these two numbers is

Simple interest on a certain sum of money for 3 years at 14% per annum is half the compound interest on Rs. 10000 for 2 years at 10% per annum. The sum placed on simple interest is

A sum of Rs 800 becomes Rs 1000 in 2 years at simple interest. What is the per annum rate of interest (in percent)?