PSLE Fabian was given a fixed amount of allowance each month. In August, he spent $450 and saved the rest. In September, he spent 40% less and his savings increased by 20%. How much was Fabian's allowance for each month?
|
Spending (%) |
Savings (u) |
Before
|
100% $450 |
100 u
|
Change |
- 40% |
+ 20 u |
After |
60% |
120 u |
100% of spending = 450
1% of spending = 450 ÷ 100 = 4.5
40% of spending = 40% x 450 = 180
40% of spending = 20 u of savings
20 u of savings = 180
1 u of savings = 180 ÷ 20 = 9
100 u of savings = 100 x 9 = 900
Fabian's allowance for each month
= 100% of spending + 100 u of savings
= 450 + 900
= $1350
Answer(s): $1350