PSLE Henry was given a fixed amount of allowance each month. In March, he spent $340 and saved the rest. In April, he spent 40% more and his savings decreased by 20%. How much was Henry's allowance for each month?
|
Spending (%) |
Savings (u) |
Before |
100% $$(n80 |
100 u |
Change |
+ 40% |
- 20 u |
After |
140% |
80 u |
100% of spending = 340
1% of spending = 340 ÷ 100 = 3.4
40% of spending = 40% x 340 = 136
40% of spending = 20 u of savings
20 u of savings = 136
1 u of savings = 136 ÷ 20 = 6.8
100 u of savings = 100 x 6.8 = 680
Henry's allowance for each month
= 100% of spending + 100 u of savings
= 340 + 680
= $1020
Answer(s): $1020