Question 54702
WHERE DO YOU GET THAT LEGS IS 3.5 TIMES THE NUMBER OF HEADS. 
I GET 2 HEADS WITH A TOTAL OF 6 LEGS WHICH IS 3 TO 1 NOT 3.5 TO 1.

72=X(3)+Y(5)
72=3X+5Y
THIS HAS A FEW SOLUTIONS
6 CATS 14 WITCHES 0R 6*5+14*3=72 OR 30+42=72 OR 72=72
9 CATS 9 WITCHES OR 9*5+9*3=72 OR 45=27=72 OR 72=72
12 CATS 4 WITCHERS OR 12*5+4*3=72 OR 60+12=72 OR 72=72