Ryan is 7 years older than Dylan. 13 years ago, the sum of their age was 57. How old is Ryan now?
| |
Ryan |
Dylan |
Difference |
Total |
| Before |
1 u + 7 |
1 u |
7 |
57 |
| Change |
+ 13 |
+ 13 |
|
+ 26 |
| After |
1 u + 20 |
1 u + 13 |
7 |
2 u + 33 |
The difference in the age between Ryan and Dylan remains unchanged.
Dylan's current age = 1 u
Ryan's current age = 1 u + 7
Combined age of Ryan and Johny 13 years ago
= 1 u + 1 u + 7
= 2 u + 7
2 u + 7 = 57
2 u = 57 - 7
2 u = 50
1 u = 50 ÷ 2 = 25
Ryan's current age
= 1 u + 20
= 25 + 20
= 45
Answer(s): 45
