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The product of Mr. Wu and the amount paid to Aerospace is 143 yuan. How many Mr. Weng Fu Yuhang has?
The bus took 40 minutes, so a one-way trip takes 20 minutes. The whole journey takes 30 minutes.

So Mr. Qian left 1 hour, which is equivalent to 30-20 minutes by car =10 minutes.

So the speed is six times that of Mr. Qian.

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