PSLE Cole was given a fixed amount of allowance each month. In January, he saved $80 and spent the rest. In February, he saved 30% more and his spending decreased by 10%. How much was Cole's allowance for each month?
|
Savings (%) |
Spending (u) |
Before |
100% $$(n80 |
100 u |
Change |
+ 30% |
- 10 u |
After |
130% |
90 u |
100% of savings = 80
1% of savings = 80 ÷ 100 = 0.8
30% of savings = 30% x 80 = 24
30% of savings = 10 u of spending
10 u of spending = 24
1 u of spending = 24 ÷ 10 = 2.4
100 u of spending = 100 x 2.4 = 240
Cole's allowance for each month
= 100% of savings + 100 u of spending
= 80 + 240
= $320
Answer(s): $320