in a group of donkeys and pigs , the numbers of legs are 16 more than twice the number of heads . the number of donkeys is
let the number of donkeys be x and the number of pigs be y . then , 4 x + 2 y = 2 ( x + y ) = 16 or 2 x + ( 2 x + 2 y ) = ( 2 x + 2 y ) + 16 or 2 x = 16 or x = 8 . answer : b
multiply(divide(16, add(const_2, const_2)), const_2)