Bryan is 24 years old. The total age of Bryan and Adam is 76 years. How many years ago was the ratio of Bryan's age to Adam's age 1 : 3?
| |
Bryan |
Adam |
Total |
Difference |
| Before |
1 u |
3 u |
|
2 u |
| Change |
+ ? |
+ ? |
|
|
| After |
24 |
52 |
76 |
28 |
Adam's age
= 76 - 24
= 52
Difference in the age between Bryan and Adam
= 52 - 24
= 28
To find the number of years ago for the ratio of Bryan's age to Adam's age to be 1 : 3.
Bryan's age = 1 u
Adam's age = 3 u
Difference in the age
= 3 u - 1 u
= 2 u
2 u = 28
1 u = 28 ÷ 2 = 14
Bryan's age then = 1 u = 14
Bryan's age now = 24
Number of years ago
= 24 - 14
= 10
Answer(s): 10
