Brandon and Albert were given some allowances each. If Brandon spent $29 each day and Albert spent $87 each day, Brandon would still have $1901 left when Albert spent all his allowance. If Brandon spent $87 each day and Albert spent $29 each day, Brandon would still have $45 left when Albert spent all his allowance.
- How much allowance did Brandon receive?
- How much allowance did Albert receive?
|
Case 1 |
Case 2 |
|
Brandon |
Albert |
Brandon |
Albert |
Before |
1 u + 1901 |
3 u |
3 p + 45 |
1 p |
Change |
- 1 u |
- 3 u |
- 3 p |
- 1 p |
After |
1901 |
0 |
45 |
0 |
(a)
Simplify the ratio.
29 : 87 = 1 : 3
The allowance that Albert had at first is the same for Case 1 and Case 2.
1 p = 3 u
3 p = 9 u
The allowance that Brandon had at first is the same for Case 1 and Case 2.
9 u + 45 = 1 u + 1901
9 u - 1 u = 1901 - 45
8 u = 1856
1 u = 1856 ÷ 8 = 232
Allowance that Brandon received
= 1 u + 1901
= 232 + 1901
= $2133
(b)
Allowance that Albert received
= 3 u
= 3 x 232
= $696
Answers: (a) $2133; (b) $696