PSLE Glen was given a fixed amount of allowance each month. In July, he spent $480 and saved the rest. In August, he spent 20% less and his savings increased by 30%. How much was Glen's allowance for each month?
|
Spending (%) |
Savings (u) |
Before
|
100% $480 |
100 u
|
Change |
- 20% |
+ 30 u |
After |
80% |
130 u |
100% of spending = 480
1% of spending = 480 ÷ 100 = 4.8
20% of spending = 20% x 480 = 96
20% of spending = 30 u of savings
30 u of savings = 96
1 u of savings = 96 ÷ 30 = 3.2
100 u of savings = 100 x 3.2 = 320
Glen's allowance for each month
= 100% of spending + 100 u of savings
= 480 + 320
= $800
Answer(s): $800