Lynn had $350 less than Oscar. Oscar spent 0.8 of his money and Lynn spent 0.4 of her money. In the end, Oscar and Lynn had the same amount of money left. Find the amount of money Lynn had at first.
| |
Lynn |
Oscar |
Difference |
| Before |
5 u |
15 u |
10 u |
| Change |
- 1 u |
- 3 u |
|
| After |
3 u |
3 u |
|
0.8 =
45 Fraction of Oscar's amount left
= 1 -
45 =
15 0.4 =
25 Fraction of Lynn's amount left
= 1 -
25 =
35 The amount that Oscar and Lynn each had in the end is the same. Make the numerators the same. LCM of 1 and 3 is 3.
15 of Oscar's amount =
35 of Lynn's amount
315 of Oscar's amount =
35 of Lynn's amount
Amount that Lynn had less than Oscar
= 15 u - 5 u
= 10 u
10 u = 350
1 u = 350 ÷ 10 = 35
Amount that Lynn had at first
= 5 u
= 5 x 35
= $175
Answer(s): $175
