Question
PSLE
Mr Tang bought some catfishes at $6 each. He also bought an equal number of goldfishes at a different price. The average price of a catfish and a goldfish was $4. Mr Tang paid $12 more for the catfishes than the goldfishes. How many catfishes did he buy?
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PSLE
Mr Tang bought some catfishes at $6 each. He also bought an equal number of goldfishes at a different price. The average price of a catfish and a goldfish was $4. Mr Tang paid $12 more for the catfishes than the goldfishes. How many catfishes did he buy?