John and Sarah had equal amount of money. John spent
12 of his money on a skirt while Sarah spent
23 of her money on a sweater. Given that Sarah spent $4 more than John, how much did John have at first?
| |
John |
Sarah |
| Before |
2x3 =
6 u |
3x2 =
6 u |
| Change |
- 1x3 =
- 3 u |
- 2x2 =
- 4 u |
| After |
1x3 =
3 u |
1x2 =
2 u |
The amount that John and Sarah had at first is the same. Make the amount that John and Sarah had at first the same. LCM of 2 and 3 is 6.
Amount that Sarah spent more than John
= 4 u - 3 u
= 1 u
1 u = 4
Amount that John had at first
= 6 u
= 6 x 4
= $24
Answer(s): $24
