Simon and Gabriel were given some allowances each. If Simon spent $16 each day and Gabriel spent $32 each day, Simon would still have $814 left when Gabriel spent all his allowance. If Simon spent $32 each day and Gabriel spent $16 each day, Simon would still have $46 left when Gabriel spent all his allowance.
- How much allowance did Simon receive?
- How much allowance did Gabriel receive?
|
Case 1 |
Case 2 |
|
Simon |
Gabriel |
Simon |
Gabriel |
Before |
1 u + 814 |
2 u |
2 p + 46 |
1 p |
Change |
- 1 u |
- 2 u |
- 2 p |
- 1 p |
After |
814 |
0 |
46 |
0 |
(a)
Simplify the ratio.
16 : 32 = 1 : 2
The allowance that Gabriel had at first is the same for Case 1 and Case 2.
1 p = 2 u
2 p = 4 u
The allowance that Simon had at first is the same for Case 1 and Case 2.
4 u + 46 = 1 u + 814
4 u - 1 u = 814 - 46
3 u = 768
1 u = 768 ÷ 3 = 256
Allowance that Simon received
= 1 u + 814
= 256 + 814
= $1070
(b)
Allowance that Gabriel received
= 2 u
= 2 x 256
= $512
Answers: (a) $1070; (b) $512