Bryan is 29 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 3 : 5?
| |
Bryan |
Adam |
Total |
Difference |
| Before |
3 u |
5 u |
|
2 u |
| Change |
+ ? |
+ ? |
|
|
| After |
29 |
47 |
76 |
18 |
Adam's age
= 76 - 29
= 47
Difference in the age between Bryan and Adam
= 47 - 29
= 18
To find the number of years ago for the ratio of Bryan's age to Adam's age to be 3 : 5.
Bryan's age = 3 u
Adam's age = 5 u
Difference in the age
= 5 u - 3 u
= 2 u
2 u = 18
1 u = 18 ÷ 2 = 9
Bryan's age then = 3 u = 27
Bryan's age now = 29
Number of years ago
= 29 - 27
= 2
Answer(s): 2
