Archie had $2.50 less than Elijah. After Archie gave $3.10 to Elijah, Elijah would have four times as much money as Archie. How much money had Elijah at first?
| |
Elijah |
Archie |
| Before |
4 u - $3.10 |
1 u + $3.10 |
| Change |
+ $3.10 |
- $3.10 |
| After |
4 u |
1 u |
Archie had $2.50 less than Elijah. If another $2.50 was given to Archie, Elijah and Archie would have the same amount at first.
4 u - 3.10 = 1 u + 3.10 + 2.50
4 u - 1 u = 3.10 + 2.50 + 3.10
3 u = 8.70
1 u = 8.70 ÷ 3 = 2.90
Amount that Elijah had at first
= 4 u - 3.10
= 4 x 2.90 + 3.10
= 11.60 + 3.10
= $14.70
Answer(s): $14.70
