Question
PSLE
Mr Ma bought some catfishes at $5 each. He also bought an equal number of guppies at a different price. The average price of a catfish and a guppy was $4. Mr Ma paid $16 more for the catfishes than the guppies. How many catfishes did he buy?
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PSLE
Mr Ma bought some catfishes at $5 each. He also bought an equal number of guppies at a different price. The average price of a catfish and a guppy was $4. Mr Ma paid $16 more for the catfishes than the guppies. How many catfishes did he buy?