Value after one year = Purchase price - (Depreciation rate * Purchase price)
Given:
Purchase price = $14000
Depreciation rate = 20% = 0.2
Substituting these values into the formula:
Value after one year = $14000 - (0.2 * $14000)
= $14000 - $2800
= $11200
Therefore, the value of the truck after one year of purchase will be $11200