Kylie is 5 years old. Her father is 33 years old. How old will Kylie be when her father is five times her age?
| |
Kylie |
Her father |
Difference |
| Before |
5 |
33 |
28 |
| Change |
+ ? |
+ ? |
|
| After |
1 u |
5 u |
4 u |
The difference in the age between Kylie and her father remains unchanged.
Difference in their age at first
= 33 - 5
= 28
Difference in their age in the end
= 5 u - 1 u
= 4 u
4 u = 28
1 u = 28 ÷ 4 = 7
Kylie's age when her father is five times her age
= 1 u
= 7
Answer(s): 7
