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Mathematics, 23.04.2021 21:20 elwinelwin9475

Over good roads a motorist averages /h and over bad roads he averages y /h. If he spends twice as long on good roads as on bad roads, find an expression for his average speed in /h

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Over good roads a motorist averages /h and over bad roads he averages y /h. If he spends twice as lo...
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