PSLE Oliver was given a fixed amount of allowance each month. In April, he spent $60 and saved the rest. In May, he spent 40% more and his savings decreased by 20%. How much was Oliver's allowance for each month?
|
Spending (%) |
Savings (u) |
Before |
100% $$(n80 |
100 u |
Change |
+ 40% |
- 20 u |
After |
140% |
80 u |
100% of spending = 60
1% of spending = 60 ÷ 100 = 0.6
40% of spending = 40% x 60 = 24
40% of spending = 20 u of savings
20 u of savings = 24
1 u of savings = 24 ÷ 20 = 1.2
100 u of savings = 100 x 1.2 = 120
Oliver's allowance for each month
= 100% of spending + 100 u of savings
= 60 + 120
= $180
Answer(s): $180