Quantitative Aptitude - Arithmetic Ability Questions

Pipe A can empty a filled tank in 28 hours while Pipe B can fill the same tank, when empty in 35 hrs. If alternatively Pipes A and B are turned on for an hour each time, starting when the tank is full, how long will it take to empty the tank?

The diagonal of a rhombus is 8m and 6m respectively. Find its area.

What is the reflection of the point (-1 , 5) in the line x = 1?

For triangle ABC, find equation of median AD if co­-ordinates of points A, B and C are (2,­4), (3,0) and (5,­2) respectively?

What is the value of √[(1 + sinA)/(1 -­ sinA)]?

A ladder 13 m long reaches a window which is 12 m above the ground on side of a street. Keeping its foot at the same point, the ladder is turned to the other side of the street to each a window 5m high, then the width of the street is :

If the shopkeeper sells an item at Rs 1600 which is marked as Rs 2000, then what is the discount he is offering?

If 7/8th of 5/4th of a number is 315, then 5/9th of that number is _____