Questions and Answers

Question posted by Alicia from Singapore:

Mr Lim had 12 female fish and 8 male fish in his pond.
a)What fraction of the fish was female?
b)After Mr LIm had added some male fish into the pond, he found that half of the fish were male. What is the total number of fish in the pond ?


Step 1: Draw 2 unequal boxes, 1 to represent number of female fish, 1 to represent male fish.

Step 2: Draw 1 more box with dotted lines to bring the numder of male fish to be equal to the number of female fish.

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