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The sum of the numbers in each ring below should be 55. What is the value of A?
A) 9 B) 10 C) 13 D) 16 E) 17
this is easy. you just add up all the numbers in ring 2 exept B and subract that number from 55. then you know B equals 8. then you add all the numbers in ring a, plus 8, for B, and then you subtract that from 55, which equals 10, so thats the answer.
A=10, B=8, So the anwser is B.
It has to be B since the bottom ring sum without b is 47 so b is 8 and then, in the top ring, the sum is 45 without A so the answer is 20 because of 55-45