Quantitative Aptitude - Arithmetic Ability Questions

The alcohol and water in a mixture are in the ratio of 7 : 8 respectively. If 11 litre water is added to it, then the ratio of alcohol and water in the new mixture becomes 3 : 5. What is the total quantity (in litres) of the alcohol in the new mixture?

Rehman goes on a trip on his motor-cycle and rides for 661 kms. If he rides for 8 hours at a speed of 31 km/hr, find at what speed he travels for the remaining 7 hours of the journey?

Factors of 36 - 

What is the average of all the one digit and two digit natural numbers?

In the following question, select the odd letter group from the given alternatives.

If [2(4x/5 - 3/4)]/3 - 5/3 = -1/6, then the value of x is?

The ratio between the area of a square and that of a circle, when the length of a side of the square is equal to that of the diameter of the circle, is (take π=22/7)

What is the value of (cosec30 - 1/√3)?