If p is increased by 20 percent  and k is decreased by 20 percent  the resulting  numbers will have the ratio P to K equal to A 3/2 B 2/3 C1?

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  • 4 months ago

    p'=p(1+20%)=1.2p

    k'=k(1-20%)=0.8k

    after the changes.

    p'/k'=1.2p/0.8k=3p/2k.

    If p=k, then p'/k'=3/2.

  • sepia
    Lv 7
    4 months ago

    If p is increased by 20 percent and k is decreased by 20 percent the resulting numbers will have the ratio P to K equal to A 3/2.

  • Philip
    Lv 6
    4 months ago

    (1+ 1/5)/(1- 1/5) = 6/4 =32.Choice A pertains.

  • 4 months ago

    If P is increased by 20 percent and k is decreased by 20 percent 

    the resulting numbers will have the ratio P to K equal to 3/2.

    Answer choice:

    A 3/2 

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  • 4 months ago

    When P is increased by 20% we have:

    1.2P

    When K is decreased by 20% we have:

    0.8K

    so, 1.2P : 0.8K

    => 12P : 8K

    i.e. 3P : 2K

    so, (3/2)P = K...i.e. P to K 

    Then, (2/3)K = P...i.e. K to P

    :)>

  • Anonymous
    4 months ago

    If P is increased by 20% .. that's 120%

    If K is decreased by 20% .. that's 80 %

    So the 'ratio' of P to K will be 120/80 ... which is 3/2

    and 2/3 would be the ratio of K to P.

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