Elijah had $33 more than Mary. After Mary spent
17 of her money, Elijah had thrice as much money as Mary. How much money did Elijah have at first?
| |
Elijah |
Mary |
| Before |
18 u |
7 u |
| Change |
|
- 1 u |
| After |
18 u |
6 u |
Amount that Elijah had in the end
= 3 x 6 u
= 18 u
If Mary had another $33 at first, the amounts that Elijah and Mary each had at first will be the same.
18 u = 7 u + 33
18 u - 7 u = 33
11 u = 33
1 u = 33 ÷ 11 = 3
Amount Elijah had at first
= 18 u
= 18 x 3
= $54
Answer(s): $54
