math

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A clock is 4 minutes fast when the correct time is 10am,but it is losing 2 minutess every half hour.What time will it show when the correct time is 4pm.the same day?would u please show me how to work it out,thanks

  • math -

    you can either construct your formula

    OR go step by step until you reach 4pm.
    at 10am, 4 minutes is ahead
    at 10:30am, 2 minutes ahead
    at 11:00, 0 minute ahead
    at 11:30, 2 minutes late
    at 12:00pm, 4 minutes late and so on...

    hope that helps..

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