Math

Darnells car used 8 gallons of gasoline to to travel 340 miles a mican

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  1. so, he gets 340/8 mi/gal

  2. The ratio of dogs and cats at the pets store is 2:5 if there are 6 more cats than dogs, how many dogs are in the pet store

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    posted by Austin
  3. d/c = 2/5
    That is, 5d = 2c
    Now, c = d+6
    so, 2c = 2d+12
    5d = 2d + 12
    3d = 12
    d = 4
    check: 4 dogs, 10 cats
    4:10 = 2:5 and 10 = 4+6

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