Sam is 10 years older than Luis. 11 years ago, the sum of their age was 62. How old is Sam now?
| |
Sam |
Luis |
Difference |
Total |
| Before |
1 u + 10 |
1 u |
10 |
62 |
| Change |
+ 11 |
+ 11 |
|
+ 22 |
| After |
1 u + 21 |
1 u + 11 |
10 |
2 u + 32 |
The difference in the age between Sam and Luis remains unchanged.
Luis's current age = 1 u
Sam's current age = 1 u + 10
Combined age of Sam and Johny 11 years ago
= 1 u + 1 u + 10
= 2 u + 10
2 u + 10 = 62
2 u = 62 - 10
2 u = 52
1 u = 52 ÷ 2 = 26
Sam's current age
= 1 u + 21
= 26 + 21
= 47
Answer(s): 47
