Julie's salary to Abi's salary is 7 : 9. If Julie spends
35 of her salary, she will have $2480 less than Abi. How much salary does Abi have?
| |
Julie |
Abi |
Comparing Julie
and Abi at first |
7x5 =
35 u |
9x5 =
45 u |
Before |
5x7 =
35 u |
|
Change |
- 3x7 =
- 21 u |
|
After |
2x7 =
14 u |
45 u |
Comparing Julie
and Abi in the end |
|
$2480 less |
Julie's salary at first is repeated. Make Julie's salary at first the same. LCM of 7 and 5 is 35.
Amount that Julie will have less than Abi in the end
= 45 u - 14 u
= 31 u
31 u = 2480
1 u = 2480 ÷ 31 = 80
Abi's salary
= 45 u
= 45 x 80
= $3600
Answer(s): $3600
