Many people were worried when they found that their photocopiers had been sometimes changing numbers; one photocopier sometimes, although not always, changed 6 into 8. A list of prices was copied on this photocopier. The first five prices on the copy·are shown below. $54.80 $60.00 $65.40 $70.80 $78.20 In the original list, the prices had increased by the same amount each time. What was the next price.on the original list?

Correct answer: A. $81.60

A. $81.60
B. $81.80
C. $83.60
D. $85.60

Explanation

Since the photocopiers change the 6s to 8s, we can assume that the first price is $54.60 instead of $54.80, the third price is actually $65.40 instead of $85.40, and the fifth price is $76.20 instead of $78.20. Doing this means that we now have a consistent increase in prices of $5.40.With that, we can make our own copy of the original list:$54.60$60.00$65.40$70.80$76.20With another consistent price increase of $5.40, the next price on the original list = $76.20+$5.40=$81.60Therefore, the answer is A.

Last updated 3 September 2026

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