Jean is 5 years old. Her uncle is 37 years old. How old will Jean be when her uncle is five times her age?
| |
Jean |
Her uncle |
Difference |
| Before |
5 |
37 |
32 |
| Change |
+ ? |
+ ? |
|
| After |
1 u |
5 u |
4 u |
The difference in the age between Jean and her uncle remains unchanged.
Difference in their age at first
= 37 - 5
= 32
Difference in their age in the end
= 5 u - 1 u
= 4 u
4 u = 32
1 u = 32 ÷ 4 = 8
Jean's age when her uncle is five times her age
= 1 u
= 8
Answer(s): 8
