If Adam's income decreases 30% from $400 and then increases by 50%, what is his latest income?
|
Original Income (%) |
New income (u) |
Income ($) |
Before 1 |
100% |
|
$400 |
Change 1 |
- 30% |
|
|
After 1 |
70% |
100 u |
$280 |
Change 2 |
|
+ 50 u |
|
After 2 |
|
150 u |
$420 |
100% of Adam's original income = $400
1% of Adam's original income
= 400 ÷ 100
= $4
100% - 30% = 70%
70% of Adam's original income
= 70 x 4
= $280
70% of Adam's original income = 100 u of Adam's new income
100 u of Adam's new income = 280
1 u of Adam's new income
= 280 ÷ 100
= $2.80
100 u + 50 u = 150 u
150 u of Adam's new income
= 150 x 2.80
= $420
Adam's latest income = $420
Answer(s): $420