In a group f buffaloes and duck, the number of legs are 24 more than twice the number of hands. what is the number of buffaloes in the group?
A ) 24
B ) 18
C ) 12 ✅
D ) 30
Explanation:
Let the number of buffaloes is x and the number of ducks is y. Each buffalo has 1 head & 4 legs. Each duck has 1 head & 2 legs. So the number of heads =x+y and the number of legs=4x+2y. So, by the given condition, 4x+2y=2(x+y)+24 4x−2x+2y−2y=24 2x=24 x=12