Quantitative Aptitude - Arithmetic Ability Questions

The total surface area of a hemisphere is 166.32 sq cm, find its radius?

A train 110 metres long is running with a speed of 60 kmph . In what time will it pass a man who is running at 6 kmph in the direction opposite to that in which the train is going ?

Average of the marks of 132 students of a college is 40. If the average of the marks of the passed students is 42 and the average of the marks of the failed students is 20, then what will be the respective ratio of the total marks of passed students and the total marks of failed students?

The sum of three consecutive even numbers is 42. Find the middle number.

If 15 persons can do a job in 30 days, then 30 persons with twice the efficiency can do the same job in how many days?

A cricketer, whose bowling average was 12.4 runs/wicket takes 5 wickets for 22 runs in a match, thereby decreases his average by 0.4. The number of wickets, taken by him before this match was:

If 4x - 5y = -37 and 7x + y = -16, then x - y = ______

Divide Rs. 368 in the ratio 1:5:8:9. The rupees in the respective ratios are given by