Xuan's salary to Tiffany's salary is 3 : 7. If Xuan spends
35 of her salary, Tiffany will have $290 more than her. How much salary does Xuan have?
| |
Xuan |
Tiffany |
Comparing Xuan
and Tiffany at first |
3x5 =
15 u |
7x5 =
35 u |
Before |
5x3 =
15 u |
|
Change |
- 3x3 =
- 9 u |
|
After |
2x3 =
6 u |
35 u |
Comparing Xuan
and Tiffany in the end |
|
$290 more |
Xuan's salary at first is repeated. Make Xuan's salary at first the same. LCM of 3 and 5 is 15.
Amount that Tiffany will have more than Xuan in the end
= 35 u - 6 u
= 29 u
29 u = 290
1 u = 290 ÷ 29 = 10
Xuan's salary
= 15 u
= 15 x 10
= $150
Answer(s): $150
