Quantitative Aptitude - Arithmetic Ability Questions

If tan(A/2) = x, then the value of x is

5% more is gained by selling a watch for Rs. 350 than by selling it for Rs. 340. The cost price of the watch is

To cover a distance of 144 km in 3.2 hours what should be the average speed of the car in meters/second?

One of the two inlet pipes works twice as efficiently as the other. The two, working alongside a drain pipe that can empty a cistern all by itself in 8 hours, can fill the empty cistern in 8 hours. How many hours will the less efficient inlet pipe take to fill the empty cistern by itself?

If 5/2 - (6/5)(x - 15/2) = -x/5, then what is the value of x?

A ladder 20 m long is leaning against a vertical wall. It makes an angle of 30 deg with the ground. How high on the wall does the ladder reach?

What is the value of sin ­-300°?

Select the odd word/letters/number/number pair from the given alternatives.