Question

The average number of children in 2 groups is 26. If 6 children leave one of the groups, what is the new average?

Answer 1

Answer:

23

Step-by-step explanation:

Let no. of children in first group = x

Let no. of children in second group = y

Average no. of children in 2 groups = (x+y)/2 = 26

x+y = 52

As 6 children leave from one of the groups , say second group

The new total no. of children = x+(y-6) = x+y-6 = 52 - 6 = 46

Therefore , the new average no. of children in 2 groups = 46/2 = 23