Math

posted by Dylan

A turtle crawled 21 meters in 12 minutes. How long did it take her to crawl 14 meters if she crawled at the same rate the whole time????
21÷12= 1.75 meters per min so 14÷ by 1.75 is 8 min correct. Or am I way off if so please explain

  1. Reiny

    21 metres in 12 minutes
    --> 1 metre in 12/21 or 4/7 minutes
    so in 14 metres ----- 14(4/7) minutes = 8 minutes
    You are correct

    or, you could just set up a simple proportion:
    12/21 = x/14
    21x = 168
    x = 168/21 = 8

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