PSLE Albert was given a fixed amount of allowance each month. In June, he spent $170 and saved the rest. In July, he spent 20% more and his savings decreased by 40%. How much was Albert's allowance for each month?
|
Spending (%) |
Savings (u) |
Before |
100% $$(n80 |
100 u |
Change |
+ 20% |
- 40 u |
After |
120% |
60 u |
100% of spending = 170
1% of spending = 170 ÷ 100 = 1.7
20% of spending = 20% x 170 = 34
20% of spending = 40 u of savings
40 u of savings = 34
1 u of savings = 34 ÷ 40 = 0.85
100 u of savings = 100 x 0.85 = 85
Albert's allowance for each month
= 100% of spending + 100 u of savings
= 170 + 85
= $255
Answer(s): $255