Quantitative Aptitude - Arithmetic Ability Questions

Two water squash mixtures, the first with a water-to-squash ratio of 5:1 and the letter with a ratio of 3:1 are blended in the ratio 3:2. What is the final water : squash ratio in the blend?

In a cricket match, the scores of the players are considered such that coefficient of variation of scores is 16 and mean is 25 then the variance is

The reciprocal of the sum of the reciprocals of 3/8 and 8/11 is:

An hour-long test has 60 problems. If a student completes 30 problems in 25 minutes, then the required seconds he has taken on average for computing each of the remaining problems is

If the perimeter of a semicircle is 36 cm, then find its area (in cm2).

Coefficient of x2 in 4x3 - 2x2 + 2x -­ 3 are

Which of the following quadratic equations has real roots?

If 1/√(1 -­ sin2A) = x, then the value of x is