Quantitative Aptitude - Arithmetic Ability Questions

The base area of a right pyramid is 57 sq. units and height is 10 units. Then the volume of the pyramid is

An arc of 30° in one circle is double an arc in a second circle, the radius of which is three times the radius of the first. Then the angles subtended by the arc of the second circle at its centre is

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

Product of digits of a 2-digit number is 24. If we add 45 to the number, the new number obtained is a number formed by interchange of the digits. What is the number?

The sum of a fraction and 3 times its reciprocal is 31/6. What is the fraction?

Compute : 28854 / 458 / 9

The ratio of marks obtained by a student was 1:2:3. The school decided to allow grace marks of 5% for each subject. Find the student's new ratio.

A bank offers 15% compound interest per half year. A customer deposits Rs 7200 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by means of interest is