Answer:Let the daily mileage for which the ultimo charge is twice the primo charge be x miles.Daily cost of primo rental agency = $45 + $0.40xDaily cost of ultimo rental agency = $26 + $0.85xAccording to the problem statement, the daily cost of ultimo rental agency is twice the daily cost of primo rental agency for x miles. Therefore, we can write the equation as:2(45 + 0.4x) = 26 + 0.85xSolving the above equation:90 + 0.8x = 26 + 0.85x0.05x = 64x = 1280/5x = 256Hence, the daily mileage for which the ultimo charge is twice the primo charge is 256 miles.
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