Anonymous
Anonymous asked in Science & MathematicsMathematics · 1 decade ago

How many minutes is it before 12 noon, if 44 minutes ago it was three times as many minutes past 9 a.m.?

How many minutes is it before 12 noon, if 44 minutes ago

it was three times as many minutes past 9 a.m.? How do you get the answer, please help!!

3 Answers

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  • 1 decade ago
    Favorite Answer

    difference between 9 am and 12 noon= 180 min

    let x min ago was the time when 44 minutes ago it was three times as many minutes past 9 a.m.

    so 44 min ago when time was x min to 12 noon time was 3x min past 9am

    so total min in time interval 9 to 12 are 3x + 44 + x = 4x + 44

    hence 4x + 44 = 180

    or 4x=136

    so x=34 min

    so time was 34 min before 12 noon, i.e., 11:26 when 44 min ago it was 3 times as min as many min past 9 am

  • Nick J
    Lv 4
    1 decade ago

    Convert all times into no. of minutes past midnight, so 9am = 540 and noon = 720.

    Let x be the number of minutes before noon it is now,

    so current time t = 720 - x.

    44 minutes ago (t-44) it was 3x past 9am: t-44 = 540 + 3x.

    No we have simultaneous equations to solve:

    t = 720 - x

    t = 584 + 3x

    cancel out t's:

    720 - x = 584 + 3x

    136 = 4x

    x = 34

    So it is now 34 minutes before 12 noon.

  • 1 decade ago

    first u multiply 44 by three then u add 44 and divide it by 60

    then u add the minutes to 9 o' clock i got the answer 11:56 so its 4 minutes till noon

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