Abi and Lee had a total of $130. After Abi spent
58 of her money and Lee spent $10, the ratio of Abi's money to Kennenth's money became 1 : 4. How much money had Lee at first?
| |
Abi |
Lee |
Total |
| Before |
8 u |
12 u + $10 |
$130 |
| Change |
- 5 u |
- $10 |
|
| After |
3 u |
|
|
Comparing Abi and
Lee in the end |
1x3 =
3 u |
4x3 =
12 u |
|
The amount that Abi had in the end is repeated. Make the amount that Abi had in the end the same. LCM of 3 and 1 is 3.
Total amount that Abi and Lee had at first
= 8 u + 12 u + 10
= 20 u + 10
20 u + 10 = 130
20 u = 130 - 10
20 u = 120
1 u = 120 ÷ 20 = 6
Amount that Lee had at first
= 12 u + 10
= 12 x 6 + 10
= 72 + 10
= $82
Answer(s): $82
