Wendy's salary to Risa's salary is 5 : 7. If Wendy spends
57 of her salary, Risa will have $2730 more than her. How much salary does Wendy have?
| |
Wendy |
Risa |
Comparing Wendy
and Risa at first |
5x7 =
35 u |
7x7 =
49 u |
Before |
7x5 =
35 u |
|
Change |
- 5x5 =
- 25 u |
|
After |
2x5 =
10 u |
49 u |
Comparing Wendy
and Risa in the end |
|
$2730 more |
Wendy's salary at first is repeated. Make Wendy's salary at first the same. LCM of 5 and 7 is 35.
Amount that Risa will have more than Wendy in the end
= 49 u - 10 u
= 39 u
39 u = 2730
1 u = 2730 ÷ 39 = 70
Wendy's salary
= 35 u
= 35 x 70
= $2450
Answer(s): $2450
