Multiple Choice Questions on x y z are three sums of money such as y is the simple interest on x and z is the simple interest on ........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

x y z are three sums of money such as y is the simple interest on x and z is the simple interest on ...........

Quantitative Aptitude ( CCS) Simple Interest
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    x, y, z are three sums of money such as y is the simple interest on x and z is the simple interest on y for the same time and rate. The relation between x, y and z is

    xyz = 1

    Incorrect Answer

    x2 = yz

    Incorrect Answer

    y2 = xz

    Correct Answer

    z2 = xy

    Incorrect Answer
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    Explanation:

    Let the time is 't' years and the rate of interest is R \%.
    According to the question, 

    Case 1:   y =  X x R x T/100 .......i

    Case 2:   z =  y x R x T/100 .......ii

    By dividng equation 1 by equation 2

    y/z =  X x R x T / y x R x T/100

    y2 = zx

    Hence, option 3 is the correct answer.

    By: Amit Kumar
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