Question
PSLE
Mr Yang bought some catfishes at $10 each. He also bought an equal number of neon tetras at a different price. The average price of a catfish and a neon tetra was $7. Mr Yang paid $36 more for the catfishes than the neon tetras. How many catfishes did he buy?
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PSLE
Mr Yang bought some catfishes at $10 each. He also bought an equal number of neon tetras at a different price. The average price of a catfish and a neon tetra was $7. Mr Yang paid $36 more for the catfishes than the neon tetras. How many catfishes did he buy?