Sarah's salary to Shannon's salary is 4 : 7. If Sarah spends
27 of her salary, she will have $2900 less than Shannon. How much salary does Shannon have?
| |
Sarah |
Shannon |
Comparing Sarah
and Shannon at first |
4x7 =
28 u |
7x7 =
49 u |
Before |
7x4 =
28 u |
|
Change |
- 2x4 =
- 8 u |
|
After |
5x4 =
20 u |
49 u |
Comparing Sarah
and Shannon in the end |
|
$2900 less |
Sarah's salary at first is repeated. Make Sarah's salary at first the same. LCM of 4 and 7 is 28.
Amount that Sarah will have less than Shannon in the end
= 49 u - 20 u
= 29 u
29 u = 2900
1 u = 2900 ÷ 29 = 100
Shannon's salary
= 49 u
= 49 x 100
= $4900
Answer(s): $4900
