Marion's salary to Irene's salary is 2 : 9. If Marion spends
37 of her salary, she will have $1650 less than Irene. How much salary does Irene have?
| |
Marion |
Irene |
Comparing Marion
and Irene at first |
2x7 =
14 u |
9x7 =
63 u |
Before |
7x2 =
14 u |
|
Change |
- 3x2 =
- 6 u |
|
After |
4x2 =
8 u |
63 u |
Comparing Marion
and Irene in the end |
|
$1650 less |
Marion's salary at first is repeated. Make Marion's salary at first the same. LCM of 2 and 7 is 14.
Amount that Marion will have less than Irene in the end
= 63 u - 8 u
= 55 u
55 u = 1650
1 u = 1650 ÷ 55 = 30
Irene's salary
= 63 u
= 63 x 30
= $1890
Answer(s): $1890
