PSLE Luis was given a fixed amount of allowance each month. In July, he spent $290 and saved the rest. In August, he spent 30% less and his savings increased by 20%. How much was Luis's allowance for each month?
|
Spending (%) |
Savings (u) |
Before
|
100% $290 |
100 u
|
Change |
- 30% |
+ 20 u |
After |
70% |
120 u |
100% of spending = 290
1% of spending = 290 ÷ 100 = 2.9
30% of spending = 30% x 290 = 87
30% of spending = 20 u of savings
20 u of savings = 87
1 u of savings = 87 ÷ 20 = 4.35
100 u of savings = 100 x 4.35 = 435
Luis's allowance for each month
= 100% of spending + 100 u of savings
= 290 + 435
= $725
Answer(s): $725