Vaidev is 5 years old now. His brother is 20 years older than him. How old will Vaidev be when his age is
37 of his brother's age?
| |
Vaidev |
His brother |
Difference |
| Before |
|
|
20 |
| Change |
+ ? |
+ ? |
|
| After |
3 u |
7 u |
4 u |
The difference in the age between Vaidev and his brother at first and in the end remains unchanged.
Number of years that his brother is older than Vaidev
= 7 u - 3 u
= 4 u
4 u = 20
1 u = 20 ÷ 4 = 5
Vaidev's age when his age is
37 of his brother's age
= 3 u
= 3 x 5
= 15
Answer(s): 15
