A workshop in Florida for 2009 Math Kangaroo Competition.
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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.
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
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.
ReplyDeleteB
ReplyDeleteA=10, B=8, So the anwser is B.
ReplyDeleteIt 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
ReplyDelete