Answer:
the cost is now $5.40
Step-by-step explanation:
if 18.00 is 100%, and we need to find the new price we need to make 30% into a decimal. which is 0.3. then we multiply 0.3 times 18.00, and that equals 5.4, but since we are dealing with money the answer would be $5.40.
we multiply if we are trying to find the new amount and we divide to find the old amount.
