Answer :
50% off $3.18 = 3.18 X .50 = 1.59
3.18 minus discount of 1.59 = 1.59
Now 5.00 - total cost of 1.59 = 3.41 in change
3.18 minus discount of 1.59 = 1.59
Now 5.00 - total cost of 1.59 = 3.41 in change