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17 August, 20:50

1. Identify the phrase that does not represent the same rate as the other two. * *

(A) 36 miles per hour

(B) 3,158 miles per minute

(C) 52.8 feet per second

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Answers (1)
  1. 17 August, 20:56
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    Just convert them to the smallest unit possible which is seconds

    1 hour=60 mins

    1 min=60 seconds

    1 hour=3600 seconds

    1 mile=5280 feet

    so 36 miles per hour =

    36 times 5280 feet per 3600 seconds so

    36 times 5280=190080 then divide by 3600=52.8 feet per second

    then 3158 miles per minute or

    5280 times 3158 divided by 60 so

    5280 times 3158=16674240 then divide by 60 = 277904 feet per second

    so A=52.8 feet per second

    B=277904 feet per second

    C=52.8 feet per second

    B is obviously the odd one out so B is the answer
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