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Jeff runs 52 miles a week. How many weeks have passed since he was running 25 miles a week?

We don't know!

Maybe he started at one mile a week, and increased that by a mile a week every week, or a mile a week every month. Or maybe he started at 15 miles a week, and increased by three miles a week each week.

There isn't enough information in the question to give a definite answer.

Thomas is training for a marathon. He runs for 2 miles and then he walks for half a mile. If he trains by running 22 miles everyday how many miles will he walk?

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