PSLE Oliver was given a fixed amount of allowance each month. In March, he saved $280 and spent the rest. In April, he saved 40% less and his spending increased by 10%. How much was Oliver's allowance for each month?
|
Savings (%) |
Spending (u) |
Before
|
100% $280 |
100 u
|
Change |
- 40% |
+ 10 u |
After |
60% |
110 u |
100% of savings = 280
1% of savings = 280 ÷ 100 = 2.8
40% of savings = 40% x 280 = 112
40% of savings = 10 u of spending
10 u of spending = 112
1 u of spending = 112 ÷ 10 = 11.2
100 u of spending = 100 x 11.2 = 1120
Oliver's allowance for each month
= 100% of savings + 100 u of spending
= 280 + 1120
= $1400
Answer(s): $1400