Quantitative Aptitude - Arithmetic Ability Questions

Average age of 5 students of a school is 14 years. The average age of students and their Mathematics and science teachers is 30 years. If the age of science teacher is 6 years more than the age of Mathematics teacher, then what is the age (in years) of Mathematics teacher?

If in-radius of an equilateral triangle is 3 cm. Calculate the perimeter (in m) of the equilateral triangle.

How many times does the number 5 occur in the range of numbers from 1 to 100?

The amount of extension in a spring is proportional to the weight hung on it. If the weight of 5 kgs produces an extension of 0.4 cm, what weight would produce an extension of 5cm?

Suppose that the medians BD, CE and AF of a triangle ABC meet at G. Then AG: GF is

The total surface area of a cube is 181.5 cm². Find its side (in cm).

The radii of two cylinders are in the ratio 2:3 and their heights are in the ratio 5:3. The ratio of their volumes is

What is the altitude of an equilateral triangle whose side is 12√3 cm?