If Adam's income increases 10% from $500 and then falls by 20%, what is his latest income?
|
Original Income (%) |
New income (u) |
Income ($) |
Before 1 |
100% |
|
$500 |
Change 1 |
+ 10% |
|
|
After 1 |
110% |
100 u |
$550 |
Change 2 |
|
- 20 u |
|
After 2 |
|
80 u |
$440 |
100% of Adam's original income = $500
1% of Adam's original income
= 500 ÷ 100
= $5
100% + 10% = 110%
110% of Adam's original income
= 110 x 5
= $550
110% of Adam's original income = 100 u of Adam's new income
100 u of Adam's new income = 550
1 u of Adam's new income
= 550 ÷ 100
= $5.50
100 u - 20 u = 80 u
80 u of Adam's new income
= 80 x 5.50
= $440
Adam's latest income = $440
Answer(s): $440