PSLE Daniel was given a fixed amount of allowance each month. In August, he saved $360 and spent the rest. In September, he saved 40% more and his spending decreased by 10%. How much was Daniel's allowance for each month?
|
Savings (%) |
Spending (u) |
Before |
100% $$(n80 |
100 u |
Change |
+ 40% |
- 10 u |
After |
140% |
90 u |
100% of savings = 360
1% of savings = 360 ÷ 100 = 3.6
40% of savings = 40% x 360 = 144
40% of savings = 10 u of spending
10 u of spending = 144
1 u of spending = 144 ÷ 10 = 14.4
100 u of spending = 100 x 14.4 = 1440
Daniel's allowance for each month
= 100% of savings + 100 u of spending
= 360 + 1440
= $1800
Answer(s): $1800