PSLE Michael was given a fixed amount of allowance each month. In August, he saved $120 and spent the rest. In September, he saved 40% less and his spending increased by 10%. How much was Michael's allowance for each month?
|
Savings (%) |
Spending (u) |
Before
|
100% $120 |
100 u
|
Change |
- 40% |
+ 10 u |
After |
60% |
110 u |
100% of savings = 120
1% of savings = 120 ÷ 100 = 1.2
40% of savings = 40% x 120 = 48
40% of savings = 10 u of spending
10 u of spending = 48
1 u of spending = 48 ÷ 10 = 4.8
100 u of spending = 100 x 4.8 = 480
Michael's allowance for each month
= 100% of savings + 100 u of spending
= 120 + 480
= $600
Answer(s): $600