PSLE Fabian was given a fixed amount of allowance each month. In March, he spent $330 and saved the rest. In April, he spent 30% more and his savings decreased by 10%. How much was Fabian's allowance for each month?
|
Spending (%) |
Savings (u) |
Before |
100% $$(n80 |
100 u |
Change |
+ 30% |
- 10 u |
After |
130% |
90 u |
100% of spending = 330
1% of spending = 330 ÷ 100 = 3.3
30% of spending = 30% x 330 = 99
30% of spending = 10 u of savings
10 u of savings = 99
1 u of savings = 99 ÷ 10 = 9.9
100 u of savings = 100 x 9.9 = 990
Fabian's allowance for each month
= 100% of spending + 100 u of savings
= 330 + 990
= $1320
Answer(s): $1320