Quantitative Aptitude - Arithmetic Ability Questions

If a - b = 4 and ab = -3, then what is the value of a3- b3?

If 9x+2 = 240 + 9x, the value of (8x)x is

In ΔUVW measure of angle V is 90 deg. If cosecU = 13/12, and UV = 2.5cm, then what is the length (in cm) of side VW?

If 1 saree is offered free on purchase of 3 sarees, what is the effective discount on each saree?

A man spends 59% of his income and saves the rest. What percentage of his expenditure does he save?

Two successive discounts of 10% and 25% are given by Raman on a shirt. If the marked price of the shirt is Rs 600, then what is the value (in Rs) of discount?

If ab-1b=cb-1c=ac-1a, then ac+ba+cb

P and Q can do a project in 12 and 12 days respectively. In how many days can they complete 50% of the project if they work together?