Quantitative Aptitude - Arithmetic Ability Questions

A fan is listed at Rs. 150 with a discount of 20% . What additional discount must be offered to the customer to bring the net price to Rs. 108 ?

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

If 7x - (3/2) * (4x - 9) = 6.5, then the value of x is?

How many times in a week does both the hands of the clock will coincide with each other?

A sum of Rs. 2000 amounts to Rs. 4000 in two years at compound interest. In how many years does the same amount becomes Rs. 8000.

If a - b = 10 and ab =-21, then what is the value of a3-b3 ?

On a certain Principal if the Simple interest for two years is Rs 4800 and Compound interest for the two years is Rs 5088, what is the rate of Interest?

Two numbers are in the ratio 2:5 and their HCF is 18. Their LCM is