Answer:
1500 = original price
Step-by-step explanation:
New price of computer = original price - original price * percent off
Factoring out the original price
New price of computer = original price (1- percent off)
We know the new price = 1200 and the percent off =20
Substituting these value in
1200 = original price (1-.2)
1200 = original price (.8)
Divide each side by .8
1200/.8 = original price*.8/.8
1500 = original price
