If Adam's income decreases 20% from $400 and then decreases by another 30%, what is the new income?
|
Original Income (%) |
New income (u) |
Income ($) |
Before 1 |
100% |
|
$400 |
Change 1 |
- 20% |
|
|
After 1 |
80% |
100 u |
$320 |
Change 2 |
|
- 30 u |
|
After 2 |
|
70 u |
$224 |
100% of Adam's original income = $400
1% of Adam's original income
= 400 ÷ 100
= $4
100% - 20% = 80%
80% of Adam's original income
= 80 x 4
= $320
80% of Adam's original income = 100 u of Adam's new income
100 u of Adam's new income = $320
1 u of Adam's new income
= 320 ÷ 100
= $3.20
100 u - 30 u = 70 u
70 u of Adam's new income
= 70 x 3.20
= $224
Adam's latest income = $224
Answer(s): $224