Christian got a haircut yesterday afternoon. If the hair stylist charged $18 and Christian gave a 20% tip, how much did he pay for the haircut?
• A. S3.60
• B. 514.40
© C. $21.60
• D. $22.60
The total cost of the haircut is $18 + 20% of $18, which is $18 + (0.20)(18) = $18 + $3.60 = $21.60. Thus, Christian paid $21.60 for the haircut.
Therefore, the answer is C. $21.60.