Quantitative Aptitude - Arithmetic Ability Questions

The rate of simple interest per annum at which a sum of money double itself in 16 2/3 yrs is

The price of an article is cut by 36%, to restore to its original value, the new price must be increased by

If 5(4­-x) - ­4 < 3x - ­2 > 4x - 6; then the value of x is

The cost of levelling a circular field at 50 Paise per square metre is Rs 7700. The cost (in Rs) of putting up a fence all round it at Rs 1.20 per meter is ( Use π = 22/7)

If x, y, z are the three factors of a3 -7a - 6, then value of x+y+z will be

If (5/9 of x) ­- (2/5 of 9/4) equals ­ -4/5 then find x.

Rakesh goes on a trip on his motor­cycle and rides for 368 kms. If he rides for 5 hours at a speed of 49 km/hr, at what speed he travels for the remaining 3 hours of the journey?

The average age of 80 boys in a class is 15 years. The average age of a group of 15 boys in the class is 16 years and the average age of another 25 boys in the class is 14 years. What is the average age of the remaining boys in the class?