Quantitative Aptitude - Arithmetic Ability Questions

A mixture of 50 kg of cement and gravel contains 10% of gravel. How many kg of gravel must be added to make the gravel content 28% in the new mixture?

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

If X+Y=3,XY=2, find the value of X3-Y3

A kite is flying in the sky. The length of string between a point on the ground and kite is 420 m. The angle of elevation of string with the ground is 30 deg. Assuming that there is no slack in the string, then what is the height (in metres) of the kite?

Which of the following quadratic equations has real roots?

Select the odd number from the given alternatives.

Find the odd word/letters/number from the given alternatives.

What is the area (in sq cm) of a rhombus if the lengths of its diagonals are 25 cm and 20 cm?