Peter Piper picked a peck of pickled peppers, but how long did it take him? We know that Peter and his friend Paul, working together, could pick a peck in 20 minutes; Paul and his friend Percival, working together, could do the job in 30 minutes. Peter and Percival working together, though, would take 40 minutes to pick a, peck. So, just how long would it take for Peter to pick a peck of pickled peppers by himself?

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THE SOLUTION

Peter picks a peck in 48 minutes.