A. 67 kg.

B. 68 kg.

C. 69 kg.

### Solution(By Apex Team)

Let Arun’s weight by X kg. According to Arun, 65 < X < 72 According to Arun’s brother, 60 < X < 70 According to Arun’s mother, X ⩽ 68 The values satisfying all the above conditions are 66, 67 and 68. Required average, $\begin{array}{l}=\Large\frac{66+67+68}{3}\\ =\Large\frac{201}{3}\\ =67\mathrm{~kg}\end{array}$

A. 20
B. 21
C. 28
D. 32

A. 18
B. 20
C. 24
D. 30

A. 10 years
B. 10.5 years
C. 11 years
D. 12 years