Quantitative Aptitude - Arithmetic Ability Questions

The average of 10 numbers is X and one of the number is 38. If 38 is replaced with 19, then what will be the new average?

Breadth of a rectangle is equal to the diagonal of the square whose side is 2.5√2 cm. Ratio between length and breadth of rectangle is 3 : 1. Find the area of the rectangle (in cm2).

Reflection of the point (­1,4) in the x­axis is

What is the area (in sq cm) of a rhombus if the lengths of the diagonals are 12 cm and 14 cm?

The cash difference between the selling price of an article at a profit of 2% and 18% is Rs. 3. The ratio of two selling prices is

The incomes of S and T are in the ratio 3 : 4 and their expenditures are in the ratio 1 : 1. If S saves Rs 4000 and T saves Rs 22000, then what will be the income (in Rs) of S?

What is the value of sin 330°?

If y = √3 - √2, then find the value of 1y3 - y3.