Tammy's salary to Cathy's salary is 2 : 7. If Tammy spends
35 of her salary, Cathy will have $1550 more than her. How much salary does Tammy have?
| |
Tammy |
Cathy |
Comparing Tammy
and Cathy at first |
2x5 =
10 u |
7x5 =
35 u |
Before |
5x2 =
10 u |
|
Change |
- 3x2 =
- 6 u |
|
After |
2x2 =
4 u |
35 u |
Comparing Tammy
and Cathy in the end |
|
$1550 more |
Tammy's salary at first is repeated. Make Tammy's salary at first the same. LCM of 2 and 5 is 10.
Amount that Cathy will have more than Tammy in the end
= 35 u - 4 u
= 31 u
31 u = 1550
1 u = 1550 ÷ 31 = 50
Tammy's salary
= 10 u
= 10 x 50
= $500
Answer(s): $500
