Alberto puts 3 kinds of fish in his fish tank : zebra danios, fancy guppies, and catfish. Half of alberto's fish are zebra danios. He has 2 times as many catfish as he has fancy guppies. Alberto's friend says that one third of Alberto's fish are catfish. Is alberto's friend correct? explain.

Respuesta :

Say he has 100 fish 50 of them are zebra so there is no way to get to 33 catfish with 16 guppies because there is still one fish left