### The average weight of first 11 persons among 12 persons is 95 kg. The weight of 12th person is 33 kg more than the average weight of all the 12 persons. The weight of the 12th person is :

A. 128.75 B. 131 C. 128 D. 97.45 Answer: Option B

### Solution(By Apex Team)

Let the average weight of 12 person is = x and weight of 12 persons (x + 33) According to the question, $\begin{array}{l}\Rightarrow\large\frac{11\times95+x+33}{12}=x\\ \Rightarrow1045+x+33=12x\\ \Rightarrow11x=1078\\ \Rightarrow x=98\end{array}$ ∴ The weight of 12th person is = 98 + 33 = 131 kg

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