Adam is 27 years old. The total age of Adam and Bryan is 82 years. How many years ago was the ratio of Adam's age to Bryan's age 1 : 8?
|
Adam |
Bryan |
Total |
Difference |
Before |
1 u |
8 u |
|
7 u |
Change |
+ ? |
+ ? |
|
|
After |
27 |
55 |
82 |
28 |
Bryan's age
= 82 - 27
= 55
Difference in the age between Adam and Bryan
= 55 - 27
= 28
To find the number of years ago for the ratio of Adam's age to Bryan's age to be 1 : 8.
Adam's age = 1 u
Bryan's age = 8 u
Difference in the age
= 8 u - 1 u
= 7 u
7 u = 28
1 u = 28 ÷ 7 = 4
Adam's age then = 1 u = 4
Adam's age now = 27
Number of years ago
= 27 - 4
= 23
Answer(s): 23