PSLE Jeremy was given a fixed amount of allowance each month. In June, he spent $50 and saved the rest. In July, he spent 20% more and his savings decreased by 40%. How much was Jeremy's allowance for each month?
|
Spending (%) |
Savings (u) |
Before |
100% $$(n80 |
100 u |
Change |
+ 20% |
- 40 u |
After |
120% |
60 u |
100% of spending = 50
1% of spending = 50 ÷ 100 = 0.5
20% of spending = 20% x 50 = 10
20% of spending = 40 u of savings
40 u of savings = 10
1 u of savings = 10 ÷ 40 = 0.25
100 u of savings = 100 x 0.25 = 25
Jeremy's allowance for each month
= 100% of spending + 100 u of savings
= 50 + 25
= $75
Answer(s): $75