PSLE Luis was given a fixed amount of allowance each month. In March, he saved $110 and spent the rest. In April, he saved 30% less and his spending increased by 10%. How much was Luis's allowance for each month?
|
Savings (%) |
Spending (u) |
Before
|
100% $110 |
100 u
|
Change |
- 30% |
+ 10 u |
After |
70% |
110 u |
100% of savings = 110
1% of savings = 110 ÷ 100 = 1.1
30% of savings = 30% x 110 = 33
30% of savings = 10 u of spending
10 u of spending = 33
1 u of spending = 33 ÷ 10 = 3.3
100 u of spending = 100 x 3.3 = 330
Luis's allowance for each month
= 100% of savings + 100 u of spending
= 110 + 330
= $440
Answer(s): $440