If Adam's income decreases 30% from $500 and then increases by 40%, what is his latest income?
|
Original Income (%) |
New income (u) |
Income ($) |
Before 1 |
100% |
|
$500 |
Change 1 |
- 30% |
|
|
After 1 |
70% |
100 u |
$350 |
Change 2 |
|
+ 40 u |
|
After 2 |
|
140 u |
$490 |
100% of Adam's original income = $500
1% of Adam's original income
= 500 ÷ 100
= $5
100% - 30% = 70%
70% of Adam's original income
= 70 x 5
= $350
70% of Adam's original income = 100 u of Adam's new income
100 u of Adam's new income = 350
1 u of Adam's new income
= 350 ÷ 100
= $3.50
100 u + 40 u = 140 u
140 u of Adam's new income
= 140 x 3.50
= $490
Adam's latest income = $490
Answer(s): $490