PSLE Daniel was given a fixed amount of allowance each month. In February, he spent $90 and saved the rest. In March, he spent 20% less and his savings increased by 40%. How much was Daniel's allowance for each month?
|
Spending (%) |
Savings (u) |
Before
|
100% $90 |
100 u
|
Change |
- 20% |
+ 40 u |
After |
80% |
140 u |
100% of spending = 90
1% of spending = 90 ÷ 100 = 0.9
20% of spending = 20% x 90 = 18
20% 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
Daniel's allowance for each month
= 100% of spending + 100 u of savings
= 90 + 45
= $135
Answer(s): $135