PSLE Sean was given a fixed amount of allowance each month. In May, he saved $330 and spent the rest. In June, he saved 20% more and his spending decreased by 40%. How much was Sean's allowance for each month?
|
Savings (%) |
Spending (u) |
Before |
100% $$(n80 |
100 u |
Change |
+ 20% |
- 40 u |
After |
120% |
60 u |
100% of savings = 330
1% of savings = 330 ÷ 100 = 3.3
20% of savings = 20% x 330 = 66
20% of savings = 40 u of spending
40 u of spending = 66
1 u of spending = 66 ÷ 40 = 1.65
100 u of spending = 100 x 1.65 = 165
Sean's allowance for each month
= 100% of savings + 100 u of spending
= 330 + 165
= $495
Answer(s): $495