PSLE Liam was given a fixed amount of allowance each month. In February, he saved $270 and spent the rest. In March, he saved 40% more and his spending decreased by 30%. How much was Liam's allowance for each month?
|
Savings (%) |
Spending (u) |
Before |
100% $$(n80 |
100 u |
Change |
+ 40% |
- 30 u |
After |
140% |
70 u |
100% of savings = 270
1% of savings = 270 ÷ 100 = 2.7
40% of savings = 40% x 270 = 108
40% of savings = 30 u of spending
30 u of spending = 108
1 u of spending = 108 ÷ 30 = 3.6
100 u of spending = 100 x 3.6 = 360
Liam's allowance for each month
= 100% of savings + 100 u of spending
= 270 + 360
= $630
Answer(s): $630