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A cake is made into 18 pieces . If syma takes 1/3 of the cake and Robin takes 1/3 of the rest that are left, how many pieces are still left ?

A cake is made into 18 pieces . If syma takes 1/3 of the cake and Robin takes 1/3 of the rest that are left, how many pieces are still left ? Correct Answer 8

Syma takes = 1/3×18 = 6 pieces Robin takes = 1/3×(18 - 6) = 1/3×12 = 4 pieces Pieces still left = 18 - (6 + 4) = 18 - 10 = 8  

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