If Adam's income decreases 10% from $500 and then increases by 40%, what is his latest income?
|
Original Income (%) |
New income (u) |
Income ($) |
Before 1 |
100% |
|
$500 |
Change 1 |
- 10% |
|
|
After 1 |
90% |
100 u |
$450 |
Change 2 |
|
+ 40 u |
|
After 2 |
|
140 u |
$630 |
100% of Adam's original income = $500
1% of Adam's original income
= 500 ÷ 100
= $5
100% - 10% = 90%
90% of Adam's original income
= 90 x 5
= $450
90% of Adam's original income = 100 u of Adam's new income
100 u of Adam's new income = 450
1 u of Adam's new income
= 450 ÷ 100
= $4.50
100 u + 40 u = 140 u
140 u of Adam's new income
= 140 x 4.50
= $630
Adam's latest income = $630
Answer(s): $630