Opal's salary to Gwen's salary is 7 : 9. If Opal spends
34 of her salary, Gwen will have $290 more than her. How much salary does Opal have?
| |
Opal |
Gwen |
Comparing Opal
and Gwen at first |
7x4 =
28 u |
9x4 =
36 u |
Before |
4x7 =
28 u |
|
Change |
- 3x7 =
- 21 u |
|
After |
1x7 =
7 u |
36 u |
Comparing Opal
and Gwen in the end |
|
$290 more |
Opal's salary at first is repeated. Make Opal's salary at first the same. LCM of 7 and 4 is 28.
Amount that Gwen will have more than Opal in the end
= 36 u - 7 u
= 29 u
29 u = 290
1 u = 290 ÷ 29 = 10
Opal's salary
= 28 u
= 28 x 10
= $280
Answer(s): $280
