Quantitative Aptitude - Arithmetic Ability Questions

P does half as much work as Q in 1/3 of the time. If together they take 15 days to complete a work, how many days will P take to do it alone?

How much quantity (in kg) of wheat costing Rs 84 per kg must be mixed with 81 kg of wheat costing Rs 60 per kg so that on selling the mixture at Rs 75.9 per kg, there is a gain of 15%?

The mean of marks secured by 45 students in division A of class X is 56, 40 students of division B is 52 and that of 40 students of division C is 50. Find the mean of marks of the students of three divisions of Class X.

Select the odd letters from the given alternatives.

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

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

If 2x- ­2(x ­- 2) < 5 ­- x > ­-2x + 2; then the value of x is

If x = a + 1a, y = a - 1a ,(a>0), then the value of x4+y4-2x2y2 is