Yen's salary to Lucy's salary is 7 : 9. If Yen spends
35 of her salary, Lucy will have $1550 more than her. How much salary does Yen have?
| |
Yen |
Lucy |
Comparing Yen
and Lucy at first |
7x5 =
35 u |
9x5 =
45 u |
Before |
5x7 =
35 u |
|
Change |
- 3x7 =
- 21 u |
|
After |
2x7 =
14 u |
45 u |
Comparing Yen
and Lucy in the end |
|
$1550 more |
Yen's salary at first is repeated. Make Yen's salary at first the same. LCM of 7 and 5 is 35.
Amount that Lucy will have more than Yen in the end
= 45 u - 14 u
= 31 u
31 u = 1550
1 u = 1550 ÷ 31 = 50
Yen's salary
= 35 u
= 35 x 50
= $1750
Answer(s): $1750
