The ratio of ages of five boys is 1: 2 : 3: 4: 5. and the average age of those people is 30 years. Then find the age of the youngest boy.
1
10 years
2
20 years
3
30 years
4
40 years
The ratio of ages of five boys is 1: 2 : 3: 4: 5. and the average age of those people is 30 years. Then find the age of the youngest boy.