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math

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Andrew worked from 9:45 am to 3:40 pm on Saturday.how long did he work on Saturday?

A)5 hours 50 minutes

B)5 hours 55 minutes

C)6 hours 5 minutes

D)6 hours 55 minutes

i got 6 hours 35 minutes what did i do wrong

  • math -

    I like changing to a 24 hour clock (adding 12 to all PM hours)

    from 0945 to 1540?
    subtract
    1540
    0945
    5:55

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