If Adam's income decreases 10% from $200 and then increases by 10%, what is Adam's latest income?
| |
Original Income (%) |
New income (u) |
Income ($) |
| Before 1 |
100% |
|
$200 |
| Change 1 |
- 10% |
|
|
| After 1 |
90% |
100 u |
$180 |
| Change 2 |
|
+ 10 u |
|
| After 2 |
|
110 u |
$198 |
100% of Adam's original income = $200
1% of Adam's original income = 200 ÷ 100 = $2
100% - 10% = 90%
90% of Adam's original income = 90 x 2 = $180
100 u of Adam's new income = $180
1 u of Adam's new income = 180 ÷ 100 = $1.80
100 u + 10 u = 110 u
110% of Adam's new income = 110 x 1.80 = $198
Adam's latest income = $198
Answer(s): $198
