Penelope's salary to Xylia's salary is 3 : 7. If Penelope spends
57 of her salary, she will have $2580 less than Xylia. How much salary does Xylia have?
| |
Penelope |
Xylia |
Comparing Penelope
and Xylia at first |
3x7 =
21 u |
7x7 =
49 u |
Before |
7x3 =
21 u |
|
Change |
- 5x3 =
- 15 u |
|
After |
2x3 =
6 u |
49 u |
Comparing Penelope
and Xylia in the end |
|
$2580 less |
Penelope's salary at first is repeated. Make Penelope's salary at first the same. LCM of 3 and 7 is 21.
Amount that Penelope will have less than Xylia in the end
= 49 u - 6 u
= 43 u
43 u = 2580
1 u = 2580 ÷ 43 = 60
Xylia's salary
= 49 u
= 49 x 60
= $2940
Answer(s): $2940
