Brandon is 20 years older than his cousin. 6 years from now, his cousin will be
12 of his age while his daughter will be
25 of his cousin. Express his daughter’s present age as a fraction of Brandon's present age. Leave your answer in its simplest form.
|
Brandon |
Brandon's cousin |
Brandon's daughter |
Difference between Brandon and Brandon's cousin |
Before |
10 u - 6 |
5 u - 6 |
2 u - 6 |
20 |
Change |
+ 6 |
+ 6 |
+ 6 |
|
After
|
2x5 |
1x5 |
|
|
|
5x1 |
2x1 |
|
Comparing Brandon, his cousin and his daughter in the end |
10 u |
5 u |
2 u |
5 u |
The repeated identity is the age of Brandon's cousin. LCM of 1 and 5 is 5.
The difference in age between Brandon and Brandon's cousin remains unchanged.
Difference in age between Brandon and Brandon's cousin
= 10 u - 5 u
= 5 u
5 u = 20
1 u = 20 ÷ 5 = 4
His daughter's present age
= 2 u - 6
= 2 x 4 - 6
= 8 - 6
= 2
Brandon's present age
= 10 u - 6
= 10 x 4 - 6
= 40 - 6
= 34
His daughter's present age as a fraction of Brandon's present age
=
234=
117 Answer(s):
117