Adam is 22 years old. The total age of Adam and Bryan is 66 years. How many years ago was the ratio of Adam's age to Bryan's age 1 : 3?
| |
Adam |
Bryan |
Total |
Difference |
| Before |
1 u |
3 u |
|
2 u |
| Change |
+ ? |
+ ? |
|
|
| After |
22 |
44 |
66 |
22 |
Bryan's age
= 66 - 22
= 44
Difference in the age between Adam and Bryan
= 44 - 22
= 22
To find the number of years ago for the ratio of Adam's age to Bryan's age to be 1 : 3.
Adam's age = 1 u
Bryan's age = 3 u
Difference in the age
= 3 u - 1 u
= 2 u
2 u = 22
1 u = 22 ÷ 2 = 11
Adam's age then = 1 u = 11
Adam's age now = 22
Number of years ago
= 22 - 11
= 11
Answer(s): 11
