Quantitative Aptitude - Arithmetic Ability Questions

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

13 years ago Ram was twice as old as Sunny. Three years from now Sunny's age will be 3/5 of Ram's age. What is Ram's current age?

A person purchased 10 shirts costing Rs 150 per shirt. Next day  he again purchased the shirts costing Rs 150 per shirt at a discount of Rs 30 per shirt and that day he spent a toal of Rs 1800. What is the average cost per shirt (in Rs)?

There is 40% increase in an amount in 8 years at simple interest. What will be the compound interest of Rs. 36000 after 2 years at the same rate?

What is the value of (4a2 + 8b + 14c + 2)/2 ?

What is the simplest form of (1 + cosA)(cosecA ­ cotA)?

Divya and Kriti have total 46 candies. If Divya has 10 candies more than kriti, then find the total number of candies Divya have?

What is the sum of the first 11 terms of an arithmetic progression if the first term is -31 and last term is 29?