Quantitative Aptitude - Arithmetic Ability Questions

Aditya got 78% marks in the examination. If he secured 663 marks, find the maximum marks.

Find the standard deviation of {11, 7, 10,13, 9}

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?

Car B is running twice as fast as car A. If car A covers a distance of 90 km in 1 1/2 hrs, what is the speed of car B?

To cover a distance of 234 km in 1.6 hours what should be the average speed of the car in meters/second?

Of the four numbers whose average is 91, the first is 3/10 times the sum of other three. The first number is:

The distance between places U and V is 1008 km. An express train leaves place U at 9:00 a.m. and runs at a speed of 126 km/hr. The train stops on the way for 20 minutes. At what time (in p.m.) the train will reach at the place V?

What is the value of (cos 40° – cos 140°)/(sin 80° + sin 20°)?