Gillian's salary to Gabby's salary is 7 : 9. If Gillian spends
35 of her salary, Gabby will have $2790 more than her. How much salary does Gillian have?
| |
Gillian |
Gabby |
Comparing Gillian
and Gabby at first |
7x5 =
35 u |
9x5 =
45 u |
Before |
5x7 =
35 u |
|
Change |
- 3x7 =
- 21 u |
|
After |
2x7 =
14 u |
45 u |
Comparing Gillian
and Gabby in the end |
|
$2790 more |
Gillian's salary at first is repeated. Make Gillian's salary at first the same. LCM of 7 and 5 is 35.
Amount that Gabby will have more than Gillian in the end
= 45 u - 14 u
= 31 u
31 u = 2790
1 u = 2790 ÷ 31 = 90
Gillian's salary
= 35 u
= 35 x 90
= $3150
Answer(s): $3150
