Owen and Neave were given some allowances each. If Owen spent $17 each day and Neave spent $51 each day, Owen would still have $1407 left when Neave spent all his allowance. If Owen spent $51 each day and Neave spent $17 each day, Owen would still have $47 left when Neave spent all his allowance.
- How much allowance did Owen receive?
- How much allowance did Neave receive?
|
Case 1 |
Case 2 |
|
Owen |
Neave |
Owen |
Neave |
Before |
1 u + 1407 |
3 u |
3 p + 47 |
1 p |
Change |
- 1 u |
- 3 u |
- 3 p |
- 1 p |
After |
1407 |
0 |
47 |
0 |
(a)
Simplify the ratio.
17 : 51 = 1 : 3
The allowance that Neave had at first is the same for Case 1 and Case 2.
1 p = 3 u
3 p = 9 u
The allowance that Owen had at first is the same for Case 1 and Case 2.
9 u + 47 = 1 u + 1407
9 u - 1 u = 1407 - 47
8 u = 1360
1 u = 1360 ÷ 8 = 170
Allowance that Owen received
= 1 u + 1407
= 170 + 1407
= $1577
(b)
Allowance that Neave received
= 3 u
= 3 x 170
= $510
Answers: (a) $1577; (b) $510