Math

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How do you set this up?
Solve the system using substitution:
A boat travels 18 miles downstream in 1.5 hrs. It then takes the boat 3 hrs. to travel upstream the same distance. Find the speed of the boat in still water and the speed of the current.

Thanks you!!!

  • Math -

    if the boat's speed is b, and the current is c,

    distance = time * speed

    1.5(b+c) = 18
    3(b-c) = 18

    now go solve 'em.

  • Math -

    Thank you for your help!

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