PSLE Elijah was given a fixed amount of allowance each month. In August, he spent $320 and saved the rest. In September, he spent 30% more and his savings decreased by 40%. How much was Elijah's allowance for each month?
|
Spending (%) |
Savings (u) |
Before |
100% $$(n80 |
100 u |
Change |
+ 30% |
- 40 u |
After |
130% |
60 u |
100% of spending = 320
1% of spending = 320 ÷ 100 = 3.2
30% of spending = 30% x 320 = 96
30% of spending = 40 u of savings
40 u of savings = 96
1 u of savings = 96 ÷ 40 = 2.4
100 u of savings = 100 x 2.4 = 240
Elijah's allowance for each month
= 100% of spending + 100 u of savings
= 320 + 240
= $560
Answer(s): $560