If Adam's income increases 40% from $600 and then falls by 20%, what is his latest income?
| |
Original Income (%) |
New income (u) |
Income ($) |
| Before 1 |
100% |
|
$600 |
| Change 1 |
+ 40% |
|
|
| After 1 |
140% |
100 u |
$840 |
| Change 2 |
|
- 20 u |
|
| After 2 |
|
80 u |
$672 |
100% of Adam's original income = $600
1% of Adam's original income
= 600 ÷ 100
= $6
100% + 40% = 140%
140% of Adam's original income
= 140 x 6
= $840
140% of Adam's original income = 100 u of Adam's new income
100 u of Adam's new income = 840
1 u of Adam's new income
= 840 ÷ 100
= $8.40
100 u - 20 u = 80 u
80 u of Adam's new income
= 80 x 8.40
= $672
Adam's latest income = $672
Answer(s): $672
