PSLE Vincent was given a fixed amount of allowance each month. In September, he spent $480 and saved the rest. In October, he spent 10% less and his savings increased by 40%. How much was Vincent's allowance for each month?
|
Spending (%) |
Savings (u) |
Before
|
100% $480 |
100 u
|
Change |
- 10% |
+ 40 u |
After |
90% |
140 u |
100% of spending = 480
1% of spending = 480 ÷ 100 = 4.8
10% of spending = 10% x 480 = 48
10% of spending = 40 u of savings
40 u of savings = 48
1 u of savings = 48 ÷ 40 = 1.2
100 u of savings = 100 x 1.2 = 120
Vincent's allowance for each month
= 100% of spending + 100 u of savings
= 480 + 120
= $600
Answer(s): $600