A clock

A clock was set right at 6:00 AM. If it gains 3 1/2 minutes per hour, what time will it show at 6:00 PM on the same day? Show your solution

Result

t = 6:42 PM Wrong answer

Solution:

h=3+1/260=7120≐0.0583 t=6+12⋅ h=6+12⋅ 0.0583=6710=6.7=6:42 PM

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