If Adam's income decreases 20% from $100 and then increases by 20%, what is Adam's latest income?
|
Original Income (%) |
New income (u) |
Income ($) |
Before 1 |
100% |
|
$100 |
Change 1 |
- 20% |
|
|
After 1 |
80% |
100 u |
$80 |
Change 2 |
|
+ 20 u |
|
After 2 |
|
120 u |
$96 |
100% of Adam's original income = $100
1% of Adam's original income = 100 ÷ 100 = $1
100% - 20% = 80%
80% of Adam's original income = 80 x 1 = $80
100 u of Adam's new income = $80
1 u of Adam's new income = 80 ÷ 100 = $0.80
100 u + 20 u = 120 u
120% of Adam's new income = 120 x 0.80 = $96
Adam's latest income = $96
Answer(s): $96