PSLE Bryan was given a fixed amount of allowance each month. In August, he spent $260 and saved the rest. In September, he spent 10% more and his savings decreased by 20%. How much was Bryan's allowance for each month?
|
Spending (%) |
Savings (u) |
Before |
100% $$(n80 |
100 u |
Change |
+ 10% |
- 20 u |
After |
110% |
80 u |
100% of spending = 260
1% of spending = 260 ÷ 100 = 2.6
10% of spending = 10% x 260 = 26
10% of spending = 20 u of savings
20 u of savings = 26
1 u of savings = 26 ÷ 20 = 1.3
100 u of savings = 100 x 1.3 = 130
Bryan's allowance for each month
= 100% of spending + 100 u of savings
= 260 + 130
= $390
Answer(s): $390