Question

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A bag of marbles is full with 20 marbles, 12 of which are yellow. How many are not yellow?
A. the number of yellow marbles
B. the total number of marbles
C. the number of marbles that are not yellow

Answer 1

C. If there are 20 marbles and 12 are yellow, then the number of non-yellow marbles is:

20 - 12 = 8


There are 8 non-yellow marbles.



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Answer 2

12 yellow marbles of 20 marbles total leaves 20-12 = 8 non-yellow marbles.