PSLE Oscar was given a fixed amount of allowance each month. In March, he saved $250 and spent the rest. In April, he saved 30% less and his spending increased by 10%. How much was Oscar's allowance for each month?
|
Savings (%) |
Spending (u) |
Before
|
100% $250 |
100 u
|
Change |
- 30% |
+ 10 u |
After |
70% |
110 u |
100% of savings = 250
1% of savings = 250 ÷ 100 = 2.5
30% of savings = 30% x 250 = 75
30% of savings = 10 u of spending
10 u of spending = 75
1 u of spending = 75 ÷ 10 = 7.5
100 u of spending = 100 x 7.5 = 750
Oscar's allowance for each month
= 100% of savings + 100 u of spending
= 250 + 750
= $1000
Answer(s): $1000