Answer: $1560
Explanation:
The word "of" in a problem means to multiply. 30% = .30. So, the cost of the printer is .30c.
If we add the cost of the computer, c, to the cost of the printer, .30c, then we get 1.30c. We know that the total is $2028, so our equation is 1.30c = $2028.
Dividing both sides by 1.30, we get c = $1560.