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

Mrs Gabriel is pregnant. The probability that she will give birth to a girl is 1/2 and with  bl...

In a ∆ XYZ, /YZ/ = 6cm YXZ = 60o and XYZ is a right angle. Calculate /XZ/in cm, leaving your answe...

In the diagram, PQR is a triangle.|PQ| = |PR|, |PS| = |SQ| and PRS = 50°. What is the size of &a...

If S = (4t + 3)(t - 2), find ds/dt when t = 5 secs....

If 27x = 9y. Find the value of $\frac{x}{y}$...

If 6, P, and 14 are consecutive terms in an Arithmetic Progression (AP), find the value of P. ...

Find the value of (4$^{\frac{1}{2}}$)$^6$...

In the figure, GHIJKLMN is a cube of side a. Find the length of HN. ...

Two buses start from the same station at 9.00am and travel in opposite directions along the same str...

In triangle FGB, < G = 90o, < H = 60o, while in triangle XYZ, < X = 60o and < Y = 30o. Form XYZ writ...