15 : 50 :: 18 : ?

(A) 55
(B) 59
(C) 64
(D) 62


answer is 59 but how?

Answer Posted / wareagle

If first number is x, second number is
3 (x+2) - 1

3(15+2)-1= 50
3(18+2)-1= 59

My first answer was incorrect

Is This Answer Correct ?    8 Yes 2 No



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