Tammy's salary to Gillian's salary is 5 : 7. If Tammy spends
37 of her salary, Gillian will have $580 more than her. How much salary does Tammy have?
| |
Tammy |
Gillian |
Comparing Tammy
and Gillian at first |
5x7 =
35 u |
7x7 =
49 u |
Before |
7x5 =
35 u |
|
Change |
- 3x5 =
- 15 u |
|
After |
4x5 =
20 u |
49 u |
Comparing Tammy
and Gillian in the end |
|
$580 more |
Tammy's salary at first is repeated. Make Tammy's salary at first the same. LCM of 5 and 7 is 35.
Amount that Gillian will have more than Tammy in the end
= 49 u - 20 u
= 29 u
29 u = 580
1 u = 580 ÷ 29 = 20
Tammy's salary
= 35 u
= 35 x 20
= $700
Answer(s): $700
