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Math · Problem-Solving and Data AnalysisEasy

A restaurant bill is $64.00\$64.00 before the tip. A customer adds a tip equal to 18%18\% of the bill. What is the total amount the customer pays, including the tip?

A

$11.52\$11.52

B

$64.18\$64.18

C

$75.52\$75.52

D

$82.00\$82.00

Show answer and explanation

Answer: C

The tip is 0.18×64=11.520.18 \times 64 = 11.52 dollars, so the total is 64+11.52=75.5264 + 11.52 = 75.52 dollars. You can also multiply once: 1.18×64=75.521.18 \times 64 = 75.52.

Choice A is the tip alone, but the question asks for the total, which also includes the $64.00\$64.00 bill.

Why the other choices are wrong

  • A. 11.52 dollars is the tip alone. Add it to the 64 dollar bill.
  • B. This adds 0.18 dollars, but the tip is 18% of 64 dollars, which is 11.52 dollars.
  • D. This adds 18 dollars, but 18% of 64 dollars is 11.52 dollars.
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