If Adam's income increases 30% from $800 and then falls by 40%, what is his latest income?
|
Original Income (%) |
New income (u) |
Income ($) |
Before 1 |
100% |
|
$800 |
Change 1 |
+ 30% |
|
|
After 1 |
130% |
100 u |
$1040 |
Change 2 |
|
- 40 u |
|
After 2 |
|
60 u |
$624 |
100% of Adam's original income = $800
1% of Adam's original income
= 800 ÷ 100
= $8
100% + 30% = 130%
130% of Adam's original income
= 130 x 8
= $1040
130% of Adam's original income = 100 u of Adam's new income
100 u of Adam's new income = 1040
1 u of Adam's new income
= 1040 ÷ 100
= $10.40
100 u - 40 u = 60 u
60 u of Adam's new income
= 60 x 10.40
= $624
Adam's latest income = $624
Answer(s): $624