If Adam's income decreases 20% from $700 and then increases by 20%, what is Adam's latest income?
| |
Original Income (%) |
New income (u) |
Income ($) |
| Before 1 |
100% |
|
$700 |
| Change 1 |
- 20% |
|
|
| After 1 |
80% |
100 u |
$560 |
| Change 2 |
|
+ 20 u |
|
| After 2 |
|
120 u |
$672 |
100% of Adam's original income = $700
1% of Adam's original income = 700 ÷ 100 = $7
100% - 20% = 80%
80% of Adam's original income = 80 x 7 = $560
100 u of Adam's new income = $560
1 u of Adam's new income = 560 ÷ 100 = $5.60
100 u + 20 u = 120 u
120% of Adam's new income = 120 x 5.60 = $672
Adam's latest income = $672
Answer(s): $672
