Natalie is 4 years old. Her aunt is 37 years old. How old will Natalie be when her aunt is four times her age?
| |
Natalie |
Her aunt |
Difference |
| Before |
4 |
37 |
33 |
| Change |
+ ? |
+ ? |
|
| After |
1 u |
4 u |
3 u |
The difference in the age between Natalie and her aunt remains unchanged.
Difference in their age at first
= 37 - 4
= 33
Difference in their age in the end
= 4 u - 1 u
= 3 u
3 u = 33
1 u = 33 ÷ 3 = 11
Natalie's age when her aunt is four times her age
= 1 u
= 11
Answer(s): 11
