In a family of 21 people, the average age is 14years. If the age of the grandfather is not counted, the average age drops to 12 years. What is the age of the grandfather?

Similar Questions

Find the median of 2, 1, 0, 3, 1, 1, 4, 0, 1 and 2 ...

\(\frac{d}{dx}\) cos(3x\(^2\) - 2x) is equal to...

Express 0.03785 in standard form correct to 3 significant figures. ...

If 3214 is divided by 234 and leaves a remainder r, what is the value of r?...

Which of the following is not a property of all parallelogram? ...

A binary operation * is defined on the set of positive integers is such x*y = 2x-3y+2 for all positi...

Simplify \(\left(1\frac{2}{3}\right)^2 - \left(\frac{2}{3}\right)^2\)...

The simple interest on ₦8550 for 3 years at x% per annum is ₦4890. Calculate the value of x to t...

The variance of x, 2x, 3x, 4x and 5x is ...

In the diagram above, PQT is an isosceles triangle.|PQ| = |QT|, ∠SRQ = 75°, ∠QPT = 25&de...