Question
PSLE
Mr Chen bought some guppies at $10 each. He also bought an equal number of fighting fishes at a different price. The average price of a guppy and a fighting fish was $7. Mr Chen paid $42 more for the guppies than the fighting fishes. How many guppies did he buy?
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PSLE
Mr Chen bought some guppies at $10 each. He also bought an equal number of fighting fishes at a different price. The average price of a guppy and a fighting fish was $7. Mr Chen paid $42 more for the guppies than the fighting fishes. How many guppies did he buy?