PSLE Tim was given a fixed amount of allowance each month. In April, he saved $140 and spent the rest. In May, he saved 30% less and his spending increased by 20%. How much was Tim's allowance for each month?
|
Savings (%) |
Spending (u) |
Before
|
100% $140 |
100 u
|
Change |
- 30% |
+ 20 u |
After |
70% |
120 u |
100% of savings = 140
1% of savings = 140 ÷ 100 = 1.4
30% of savings = 30% x 140 = 42
30% of savings = 20 u of spending
20 u of spending = 42
1 u of spending = 42 ÷ 20 = 2.1
100 u of spending = 100 x 2.1 = 210
Tim's allowance for each month
= 100% of savings + 100 u of spending
= 140 + 210
= $350
Answer(s): $350