PSLE John was given a fixed amount of allowance each month. In June, he spent $370 and saved the rest. In July, he spent 30% more and his savings decreased by 10%. How much was John's allowance for each month?
|
Spending (%) |
Savings (u) |
Before |
100% $$(n80 |
100 u |
Change |
+ 30% |
- 10 u |
After |
130% |
90 u |
100% of spending = 370
1% of spending = 370 ÷ 100 = 3.7
30% of spending = 30% x 370 = 111
30% of spending = 10 u of savings
10 u of savings = 111
1 u of savings = 111 ÷ 10 = 11.1
100 u of savings = 100 x 11.1 = 1110
John's allowance for each month
= 100% of spending + 100 u of savings
= 370 + 1110
= $1480
Answer(s): $1480