The age of Brandon is
47 of Vincent's age. 4 years later, the ratio of Brandon's age to Vincent's age is 2 : 3. How old is Vincent at first?
|
Brandon |
Vincent |
Difference |
Before |
4 u |
7 u |
3 u |
Change |
+ 4 |
+ 4 |
|
After |
2x3 = 6 u |
3x3 = 9 u |
1x3 = 3 u |
The difference in the age between Brandon and Vincent at first and in the end remains unchanged. Make the difference in the age between Brandon and Vincent the same. LCM of 3 and 1 is 3.
Increase in Brandon's age
= 6 u - 4 u
= 2 u
2 u = 4
1 u = 4 ÷ 2 = 2
Vincent's age at first
= 7 u
= 7 x 2
= 14
Answer(s): 14