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Month: October 2021

Problem 23

Boris has an incredible coin changing machine. When he puts in a quarter, it returns five nickles; when he puts in a nickle, it returns five pennies; and when he puts in a penny, it returns five quarters. Boris starts with just one penny. Which of the following amounts could Boris have after using the machine repeatedly?

(A) $3.63 (B) $5.13 (C) $6.30 (D) $7.45 (E) $9.07

ANSWER: D

Author adminPosted on October 28, 2021April 19, 2022Categories math competition

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