If Adam's income increases 30% from $1300 and then falls by 10%, what is his latest income?
| |
Original Income (%) |
New income (u) |
Income ($) |
| Before 1 |
100% |
|
$1300 |
| Change 1 |
+ 30% |
|
|
| After 1 |
130% |
100 u |
$1690 |
| Change 2 |
|
- 10 u |
|
| After 2 |
|
90 u |
$1521 |
100% of Adam's original income = $1300
1% of Adam's original income
= 1300 ÷ 100
= $13
100% + 30% = 130%
130% of Adam's original income
= 130 x 13
= $1690
130% of Adam's original income = 100 u of Adam's new income
100 u of Adam's new income = 1690
1 u of Adam's new income
= 1690 ÷ 100
= $16.90
100 u - 10 u = 90 u
90 u of Adam's new income
= 90 x 16.90
= $1521
Adam's latest income = $1521
Answer(s): $1521
