Opal's salary to Roshel's salary is 4 : 7. If Opal spends
37 of her salary, she will have $3630 less than Roshel. How much salary does Roshel have?
| |
Opal |
Roshel |
Comparing Opal
and Roshel at first |
4x7 =
28 u |
7x7 =
49 u |
Before |
7x4 =
28 u |
|
Change |
- 3x4 =
- 12 u |
|
After |
4x4 =
16 u |
49 u |
Comparing Opal
and Roshel in the end |
|
$3630 less |
Opal's salary at first is repeated. Make Opal's salary at first the same. LCM of 4 and 7 is 28.
Amount that Opal will have less than Roshel in the end
= 49 u - 16 u
= 33 u
33 u = 3630
1 u = 3630 ÷ 33 = 110
Roshel's salary
= 49 u
= 49 x 110
= $5390
Answer(s): $5390
