PSLE Simon was given a fixed amount of allowance each month. In September, he spent $140 and saved the rest. In October, he spent 30% less and his savings increased by 40%. How much was Simon's allowance for each month?
|
Spending (%) |
Savings (u) |
Before
|
100% $140 |
100 u
|
Change |
- 30% |
+ 40 u |
After |
70% |
140 u |
100% of spending = 140
1% of spending = 140 ÷ 100 = 1.4
30% of spending = 30% x 140 = 42
30% of spending = 40 u of savings
40 u of savings = 42
1 u of savings = 42 ÷ 40 = 1.05
100 u of savings = 100 x 1.05 = 105
Simon's allowance for each month
= 100% of spending + 100 u of savings
= 140 + 105
= $245
Answer(s): $245