Ben and Ethan were given some allowances each. If Ben spent $22 each day and Ethan spent $44 each day, Ben would still have $1237 left when Ethan spent all his allowance. If Ben spent $44 each day and Ethan spent $22 each day, Ben would still have $49 left when Ethan spent all his allowance.
- How much allowance did Ben receive?
- How much allowance did Ethan receive?
|
Case 1 |
Case 2 |
|
Ben |
Ethan |
Ben |
Ethan |
Before |
1 u + 1237 |
2 u |
2 p + 49 |
1 p |
Change |
- 1 u |
- 2 u |
- 2 p |
- 1 p |
After |
1237 |
0 |
49 |
0 |
(a)
Simplify the ratio.
22 : 44 = 1 : 2
The allowance that Ethan had at first is the same for Case 1 and Case 2.
1 p = 2 u
2 p = 4 u
The allowance that Ben had at first is the same for Case 1 and Case 2.
4 u + 49 = 1 u + 1237
4 u - 1 u = 1237 - 49
3 u = 1188
1 u = 1188 ÷ 3 = 396
Allowance that Ben received
= 1 u + 1237
= 396 + 1237
= $1633
(b)
Allowance that Ethan received
= 2 u
= 2 x 396
= $792
Answers: (a) $1633; (b) $792