A luxury liner, Queen Marry II, is transporting several cats as well as the crew (sailors, a cook, and one-legged captain) to a nearby port. Altogether, these passengers have 15 heads and 43 legs. How many cats does the ship host? Select the correct option: A) 4 B) 5 C) 6 D) 7 E) 8
sa's +co +ca +cats = 15. sa's + 1 +1 +cats =15 or sa's +cats =13.   sa's(2) +2 +1 +cats*4 =43 sa's*2 +cats*4 = 40 or sa's +cats*2 =20 or 13-cats +cat*2 =20   then cats =7   7
<result>D</result>
A luxury liner, Queen Marry II, is transporting several cats as well as the crew (sailors, a cook, and one-legged captain) to a nearby port. Altogether, these passengers have 15 heads and 43 legs. How many cats does the ship host?