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MGSM / John drives for 3 hours at a speed of 60 mph and then turns around because he…

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John drives for 3 hours at a speed of 60 mph and then turns around because he realizes he forgot something very important at home.  He tries to get home in 4 hours but spends the first 2 hours in standstill traffic.  He spends the next half-hour driving at a speed of 30mph, before being able to drive the remaining time of the 4 hours going at 80 mph.  How far is he from home at the end of those 4 hours?

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task_id: 74da3248-dedb-54d5-9dd4-d477085aeea2
task_key: en--test--74da3248-dedb-54d5-9dd4-d477085aeea2
task_revision_id: 2
config / split: en / test

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