Adam is 26 years old. The total age of Adam and Bryan is 80 years. How many years ago was the ratio of Adam's age to Bryan's age 1 : 5?
|
Adam |
Bryan |
Total |
Difference |
Before |
1 u |
5 u |
|
4 u |
Change |
+ ? |
+ ? |
|
|
After |
26 |
54 |
80 |
28 |
Bryan's age
= 80 - 26
= 54
Difference in the age between Adam and Bryan
= 54 - 26
= 28
To find the number of years ago for the ratio of Adam's age to Bryan's age to be 1 : 5.
Adam's age = 1 u
Bryan's age = 5 u
Difference in the age
= 5 u - 1 u
= 4 u
4 u = 28
1 u = 28 ÷ 4 = 7
Adam's age then = 1 u = 7
Adam's age now = 26
Number of years ago
= 26 - 7
= 19
Answer(s): 19