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    elbathsheba's Avatar
    elbathsheba Posts: 19, Reputation: 1
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    #1

    Apr 15, 2008, 08:06 AM
    Finding lengths
    A line is 45/64 in long. Find the length of a line 4/5 as long. What is 4/9 of 81/144?
    Thartge's Avatar
    Thartge Posts: 13, Reputation: 1
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    #2

    Apr 16, 2008, 07:08 AM
    Quote Originally Posted by elbathsheba
    a line is 45/64 in long. find the length of a line 4/5 as long. what is 4/9 of 81/144?
    You have to cross divide.

    45/64 divided by 4/5... divide 45 by 5 (9) then divide 64 by 4 (16)... therefore your answer 9/16

    81/144 divided by 4/9... divide 81 by 9 (9) then divide 144 by 4 (36)... therefore your answer is 9/36 which can be reduced to 1/4.

    I hope this helps.
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