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4 January, 20:12

It takes Caroline 1 hr to ride the train to work and 1.5 hr to ride the bus. Every week, she must make at least 5 trips to work, and she plans to spend no more than 6 hr in travel time. If a train trip costs $5 and a bus trip costs $4, how many times per week should she ride each in order to minimize her cost?

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  1. 4 January, 20:13
    0
    2 bus and 3 train 6hrs = $23

    1.5h + 1.5h = 3h = $8

    1h + 1h + 1h = 3h = $15

    3h + 3h = 6h = $8 + $15 = $23
  2. 4 January, 20:35
    0
    I think the answer is 1 bus 4 trains
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