math

Kristi jogged for 3/5 of an hour, swam for1/2 an hour, and rode her bicycle for 3/4 of an hour. How long did she exercise?

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asked by annonoumus
  1. Look like you are expected to add the fractions:

    3/5 + 1/2 + 3/4

    so need to add the fractions

    use a common denominator

    12/20 + 10/20 + 15/20

    can you take it from here?

    Alternatively
    3/5 hour is 36 minutes
    1/2 hour is 30 minutes
    3/4 hour is 45 minutes

    total is ? minutes

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    posted by Dr Russ
  2. 1 hour 51 minutes

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    posted by Anonymous
  3. Agreed

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    posted by Dr Russ

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