Practicing Success
The average age of a family with 5 members is 28. If one members of age 20 years is excluded the average age of the family becomes : |
25 26 30 28 |
30 |
Let sum of ages of 5 be x Here, x = 28 × 5 x =140 New average age of remaining four = \(\frac{140\;-\;20}{4}\) = 30 |