John and Rael were given some allowances each. If John spent $26 each day and Rael spent $78 each day, John would still have $2748 left when Rael spent all his allowance. If John spent $78 each day and Rael spent $26 each day, John would still have $44 left when Rael spent all his allowance.
- How much allowance did John receive?
- How much allowance did Rael receive?
|
Case 1 |
Case 2 |
|
John |
Rael |
John |
Rael |
Before |
1 u + 2748 |
3 u |
3 p + 44 |
1 p |
Change |
- 1 u |
- 3 u |
- 3 p |
- 1 p |
After |
2748 |
0 |
44 |
0 |
(a)
Simplify the ratio.
26 : 78 = 1 : 3
The allowance that Rael had at first is the same for Case 1 and Case 2.
1 p = 3 u
3 p = 9 u
The allowance that John had at first is the same for Case 1 and Case 2.
9 u + 44 = 1 u + 2748
9 u - 1 u = 2748 - 44
8 u = 2704
1 u = 2704 ÷ 8 = 338
Allowance that John received
= 1 u + 2748
= 338 + 2748
= $3086
(b)
Allowance that Rael received
= 3 u
= 3 x 338
= $1014
Answers: (a) $3086; (b) $1014