Tim is 5 years old now. His sister is 27 years older than him. How old will Tim be when his age is
58 of his sister's age?
| |
Tim |
His sister |
Difference |
| Before |
|
|
27 |
| Change |
+ ? |
+ ? |
|
| After |
5 u |
8 u |
3 u |
The difference in the age between Tim and his sister at first and in the end remains unchanged.
Number of years that his sister is older than Tim
= 8 u - 5 u
= 3 u
3 u = 27
1 u = 27 ÷ 3 = 9
Tim's age when his age is
58 of his sister's age
= 5 u
= 5 x 9
= 45
Answer(s): 45
