Bryan is 25 years old. The total age of Bryan and Adam is 80 years. How many years ago was the ratio of Bryan's age to Adam's age 1 : 6?
| |
Bryan |
Adam |
Total |
Difference |
| Before |
1 u |
6 u |
|
5 u |
| Change |
+ ? |
+ ? |
|
|
| After |
25 |
55 |
80 |
30 |
Adam's age
= 80 - 25
= 55
Difference in the age between Bryan and Adam
= 55 - 25
= 30
To find the number of years ago for the ratio of Bryan's age to Adam's age to be 1 : 6.
Bryan's age = 1 u
Adam's age = 6 u
Difference in the age
= 6 u - 1 u
= 5 u
5 u = 30
1 u = 30 ÷ 5 = 6
Bryan's age then = 1 u = 6
Bryan's age now = 25
Number of years ago
= 25 - 6
= 19
Answer(s): 19
