PSLE Tim was given a fixed amount of allowance each month. In February, he spent $380 and saved the rest. In March, he spent 40% more and his savings decreased by 10%. How much was Tim's allowance for each month?
|
Spending (%) |
Savings (u) |
Before |
100% $$(n80 |
100 u |
Change |
+ 40% |
- 10 u |
After |
140% |
90 u |
100% of spending = 380
1% of spending = 380 ÷ 100 = 3.8
40% of spending = 40% x 380 = 152
40% of spending = 10 u of savings
10 u of savings = 152
1 u of savings = 152 ÷ 10 = 15.2
100 u of savings = 100 x 15.2 = 1520
Tim's allowance for each month
= 100% of spending + 100 u of savings
= 380 + 1520
= $1900
Answer(s): $1900