If 18:X = X:8, Then X=?

A. 144
B. 72
C. 26
D. 12

Anurag Mishra Professor Asked on 1st June 2016 in Maths.
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  • 1 Answer(s)

    Answer: (D) 12 

    Solution:-
    18: X = X: 8 
    Then, 18/X = X/8 
    By cross multiplication, 
    18 x 8 = X x X
    X^2 = 144
    Square root on both site, 
    X = 12 

    Then, the value of X is 12. 

    Hence, the correct answer is option (D) 12. 

    Anurag Mishra Professor Answered on 1st June 2016.
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