The Farmer and his animals, Brain Test

A farmer has seven times more rabbits than cows. He sells 15 rabbits and buys three cows.
 After this operation the number of rabbits is 4 times higher than that of cows. Briquinex wants you to solve how many rabbits and cows had our farmer at first?
photo source:wikipedia

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1 comment:

  1. CHANDU LAL GAUR has answered correctly. Congratulations!