Gem's salary to Irene's salary is 4 : 9. If Gem spends
57 of her salary, Irene will have $3850 more than her. How much salary does Gem have?
| |
Gem |
Irene |
Comparing Gem
and Irene at first |
4x7 =
28 u |
9x7 =
63 u |
Before |
7x4 =
28 u |
|
Change |
- 5x4 =
- 20 u |
|
After |
2x4 =
8 u |
63 u |
Comparing Gem
and Irene in the end |
|
$3850 more |
Gem's salary at first is repeated. Make Gem's salary at first the same. LCM of 4 and 7 is 28.
Amount that Irene will have more than Gem in the end
= 63 u - 8 u
= 55 u
55 u = 3850
1 u = 3850 ÷ 55 = 70
Gem's salary
= 28 u
= 28 x 70
= $1960
Answer(s): $1960
