In the official exchange ratio of french francs to us dollar is 350:1 and the free exchange ratio is 400:1 how much profit would a man make if he could convert $70 to francs at the free rate and then convert these back to dollars at the official rate?
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it was a good day at work and I don't know what I want
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350-400= -50,and convert 70$ add, -50+70=20, 1+1=2,20÷2=10$ ans
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