Irene's salary to Sabrina's salary is 7 : 9. If Irene spends
56 of her salary, Sabrina will have $1880 more than her. How much salary does Irene have?
| |
Irene |
Sabrina |
Comparing Irene
and Sabrina at first |
7x6 =
42 u |
9x6 =
54 u |
Before |
6x7 =
42 u |
|
Change |
- 5x7 =
- 35 u |
|
After |
1x7 =
7 u |
54 u |
Comparing Irene
and Sabrina in the end |
|
$1880 more |
Irene's salary at first is repeated. Make Irene's salary at first the same. LCM of 7 and 6 is 42.
Amount that Sabrina will have more than Irene in the end
= 54 u - 7 u
= 47 u
47 u = 1880
1 u = 1880 ÷ 47 = 40
Irene's salary
= 42 u
= 42 x 40
= $1680
Answer(s): $1680
