A) 9
B) 10
C) 12
D) 13
Let,
lion= x and Parrot= y
Lions and parrots have one head so:
x+y= 15 ….. ( i )
Lion has four legs and a Parrot has two legs so:
4x+2y= 50 ….( ii )
multiply equation ( i ) by two and Subtraction from ( ii )
4x+2y – 2x-2y= 50-30
⇒ x= 4
so,
lion = 10