Julian is 20 years older than his cousin. 8 years from now, his cousin will be
12 of his age while his daughter will be
35 of his cousin. Express his daughter’s present age as a fraction of Julian's present age. Leave your answer in its simplest form.
|
Julian |
Julian's cousin |
Julian's daughter |
Difference between Julian and Julian's cousin |
Before |
10 u - 8 |
5 u - 8 |
3 u - 8 |
20 |
Change |
+ 8 |
+ 8 |
+ 8 |
|
After
|
2x5 |
1x5 |
|
|
|
5x1 |
3x1 |
|
Comparing Julian, his cousin and his daughter in the end |
10 u |
5 u |
3 u |
5 u |
The repeated identity is the age of Julian's cousin. LCM of 1 and 5 is 5.
The difference in age between Julian and Julian's cousin remains unchanged.
Difference in age between Julian and Julian's cousin
= 10 u - 5 u
= 5 u
5 u = 20
1 u = 20 ÷ 5 = 4
His daughter's present age
= 3 u - 8
= 3 x 4 - 8
= 12 - 8
= 4
Julian's present age
= 10 u - 8
= 10 x 4 - 8
= 40 - 8
= 32
His daughter's present age as a fraction of Julian's present age
=
432=
18 Answer(s):
18