PSLE Wesley was given a fixed amount of allowance each month. In July, he saved $270 and spent the rest. In August, he saved 20% more and his spending decreased by 10%. How much was Wesley's allowance for each month?
|
Savings (%) |
Spending (u) |
Before |
100% $$(n80 |
100 u |
Change |
+ 20% |
- 10 u |
After |
120% |
90 u |
100% of savings = 270
1% of savings = 270 ÷ 100 = 2.7
20% of savings = 20% x 270 = 54
20% of savings = 10 u of spending
10 u of spending = 54
1 u of spending = 54 ÷ 10 = 5.4
100 u of spending = 100 x 5.4 = 540
Wesley's allowance for each month
= 100% of savings + 100 u of spending
= 270 + 540
= $810
Answer(s): $810