PSLE Warren was given a fixed amount of allowance each month. In November, he spent $190 and saved the rest. In December, he spent 30% less and his savings increased by 20%. How much was Warren's allowance for each month?
|
Spending (%) |
Savings (u) |
Before
|
100% $190 |
100 u
|
Change |
- 30% |
+ 20 u |
After |
70% |
120 u |
100% of spending = 190
1% of spending = 190 ÷ 100 = 1.9
30% of spending = 30% x 190 = 57
30% of spending = 20 u of savings
20 u of savings = 57
1 u of savings = 57 ÷ 20 = 2.85
100 u of savings = 100 x 2.85 = 285
Warren's allowance for each month
= 100% of spending + 100 u of savings
= 190 + 285
= $475
Answer(s): $475