Olivia's salary to Wendy's salary is 3 : 7. If Olivia spends
27 of her salary, she will have $680 less than Wendy. How much salary does Wendy have?
| |
Olivia |
Wendy |
Comparing Olivia
and Wendy at first |
3x7 =
21 u |
7x7 =
49 u |
Before |
7x3 =
21 u |
|
Change |
- 2x3 =
- 6 u |
|
After |
5x3 =
15 u |
49 u |
Comparing Olivia
and Wendy in the end |
|
$680 less |
Olivia's salary at first is repeated. Make Olivia's salary at first the same. LCM of 3 and 7 is 21.
Amount that Olivia will have less than Wendy in the end
= 49 u - 15 u
= 34 u
34 u = 680
1 u = 680 ÷ 34 = 20
Wendy's salary
= 49 u
= 49 x 20
= $980
Answer(s): $980
