### The average of a group of men is increased by 5 years when a person aged of 18 years is replaced by a new person of aged 38 years. How many men are there in the group?

**A.** 3

**B.** 4

**C.** 5

**D.** 6

## Show Answer

###
Answer-B

Solution-

__Solution(By Apex Team)__

Let N be the no. of persons in the group.
Required number of person is given by;

**Member in group × aged increased = difference of replacement**$\begin{array}{l}\text{N × 5 = 38 – 18}\\ \text{Or, 5N = 20}\\ \text{Or, N = 4}\end{array}$