Risa's salary to Vanessa's salary is 2 : 9. If Risa spends
35 of her salary, she will have $820 less than Vanessa. How much salary does Vanessa have?
| |
Risa |
Vanessa |
Comparing Risa
and Vanessa at first |
2x5 =
10 u |
9x5 =
45 u |
Before |
5x2 =
10 u |
|
Change |
- 3x2 =
- 6 u |
|
After |
2x2 =
4 u |
45 u |
Comparing Risa
and Vanessa in the end |
|
$820 less |
Risa's salary at first is repeated. Make Risa's salary at first the same. LCM of 2 and 5 is 10.
Amount that Risa will have less than Vanessa in the end
= 45 u - 4 u
= 41 u
41 u = 820
1 u = 820 ÷ 41 = 20
Vanessa's salary
= 45 u
= 45 x 20
= $900
Answer(s): $900
