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| rev | Admin | (Created page with "'''Solution: B''' Let X and Y be the miles driven by the two cars. The total cost, is then C = 3(X/15 + Y/30) = 0.2X + 0.1Y. C has a normal distribution with mean 0.2(25) + 0...") | May 9'23 at 8:23 | +379 |