Xuan's salary to Erika's salary is 2 : 9. If Xuan spends
35 of her salary, Erika will have $410 more than her. How much salary does Xuan have?
| |
Xuan |
Erika |
Comparing Xuan
and Erika at first |
2x5 =
10 u |
9x5 =
45 u |
Before |
5x2 =
10 u |
|
Change |
- 3x2 =
- 6 u |
|
After |
2x2 =
4 u |
45 u |
Comparing Xuan
and Erika in the end |
|
$410 more |
Xuan's salary at first is repeated. Make Xuan's salary at first the same. LCM of 2 and 5 is 10.
Amount that Erika will have more than Xuan in the end
= 45 u - 4 u
= 41 u
41 u = 410
1 u = 410 ÷ 41 = 10
Xuan's salary
= 10 u
= 10 x 10
= $100
Answer(s): $100
