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10 November, 17:44

Two buses leave a station at the same time and travel in opposite directions. One bus travels 15 mph faster than the other. If the two buses are 321 miles apart after 3 hours, what is the rate of each bus?

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  1. 10 November, 21:36
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    46 mph and 61 mph

    Step-by-step explanation:

    Distance=speed*time

    Let speed of one bus be x and another x+15

    After 3 hours

    First bus would have traveled 3x while second bus 3 (x+15) = 3x+45

    Total distance = 3x+3x+45=6x+45

    6x+45=321

    6x=321-45=276

    x=276/6=46 mph

    x+15=46+15=61 mph
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