Quantitative Aptitude - Arithmetic Ability Questions

For an article the profit is 170% of the cost price. If the cost price increases by 20% but the selling price remains same, then what is the new profit percentage?

The total surface area of a cube is 337.5 cm². Find its side (in cm).

Simple interest on a sum of Rs 6800 for 18 months is Rs 2244. What is the rate (in percentage) of interest per annum?

An angle is 30 deg more than one half of its complement. Find difference between the greater and the smaller angles.

If the angles of a triangle are in the ratio of 2 : 3 : 7, then find the ratio of the greatest angle to the smallest angle.

The value of a machine depreciates at the rate of 20% per annum. If its present value is Rs 96000, then what was the value (in Rs) of the machine 2 years ago?

If 5 -­ 5x < 4 -­ x and 2 -­ x < 6 -­ 4x, then x can take which of the following values?

Coefficient of x2 in (x + 7)(5 - 3x)(3x - 6) is