Quantitative Aptitude - Arithmetic Ability Questions

The third proportional of two numbers 9 and 15 is

A and B together can complete a task in 12 days. However, if A works alone, completes half the job and leaves and then B works alone and competes the rest of the work, it takes 25 days in all to complete the work. If B is more efficient than A, how many days would it have taken B to do the work by herself?

A home theatre set is Rs. 4950. If two successive discounts of 20% and 15% are given, then its selling price is

A shopkeeper, sold cocoa seeds at the rate Rs 1330 a kg and bears a loss of 15%. Now if he decides to sell it at Rs 1463 per kg, what will be the result?

After selling 5% of a quantity of sugar, 5 Kgs of sugar remains . Find the total quantity of sugar?

If (1/cos θ) – (1/cot θ) = 1/P, then what is the value of cos θ?

If cosec4A -­ cosec2A = x, then value of x is?

Marked price of an item is Rs 400. On purchase of 1 item discount is 6% and on purchase of 4 items discount is 24%. Rachita buys 5 items, what is the effective discount?