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Problem 18 (2002 AMC 8)

AMC 8Easy

From module Mean, Median, Mode, and Harmonic Mean

Problem

Gage skated 11 hr 1515 min each day for 55 days and 11 hr 3030 min each day for 33 days. How long would he have to skate the ninth day in order to average 8585 minutes of skating each day for the entire time?

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