Bryan is 29 years old. The total age of Bryan and Adam is 73 years. How many years ago was the ratio of Bryan's age to Adam's age 2 : 7?
|
Bryan |
Adam |
Total |
Difference |
Before |
2 u |
7 u |
|
5 u |
Change |
+ ? |
+ ? |
|
|
After |
29 |
44 |
73 |
15 |
Adam's age
= 73 - 29
= 44
Difference in the age between Bryan and Adam
= 44 - 29
= 15
To find the number of years ago for the ratio of Bryan's age to Adam's age to be 2 : 7.
Bryan's age = 2 u
Adam's age = 7 u
Difference in the age
= 7 u - 2 u
= 5 u
5 u = 15
1 u = 15 ÷ 5 = 3
Bryan's age then = 2 u = 6
Bryan's age now = 29
Number of years ago
= 29 - 6
= 23
Answer(s): 23