PSLE Caden was given a fixed amount of allowance each month. In June, he spent $180 and saved the rest. In July, he spent 10% less and his savings increased by 40%. How much was Caden's allowance for each month?
|
Spending (%) |
Savings (u) |
Before
|
100% $180 |
100 u
|
Change |
- 10% |
+ 40 u |
After |
90% |
140 u |
100% of spending = 180
1% of spending = 180 ÷ 100 = 1.8
10% of spending = 10% x 180 = 18
10% of spending = 40 u of savings
40 u of savings = 18
1 u of savings = 18 ÷ 40 = 0.45
100 u of savings = 100 x 0.45 = 45
Caden's allowance for each month
= 100% of spending + 100 u of savings
= 180 + 45
= $225
Answer(s): $225