If Adam's income decreases 10% from $900 and then increases by 10%, what is Adam's latest income?
|
Original Income (%) |
New income (u) |
Income ($) |
Before 1 |
100% |
|
$900 |
Change 1 |
- 10% |
|
|
After 1 |
90% |
100 u |
$810 |
Change 2 |
|
+ 10 u |
|
After 2 |
|
110 u |
$891 |
100% of Adam's original income = $900
1% of Adam's original income = 900 ÷ 100 = $9
100% - 10% = 90%
90% of Adam's original income = 90 x 9 = $810
100 u of Adam's new income = $810
1 u of Adam's new income = 810 ÷ 100 = $8.10
100 u + 10 u = 110 u
110% of Adam's new income = 110 x 8.10 = $891
Adam's latest income = $891
Answer(s): $891