Find The Total Number of Buffaloes ?
In a groups of ducks and buffaloes, the total number of legs is 24 more than twice the number of heads. Find the total number of buffaloes ?
- 14
- 16
- 18
- 12
Answer: (4) 12
Explanation:-
Let the number of ducks be X and the number of buffaloes be Y
The total number of legs is 24 more than twice of the number of heads.
Then, 4 Y + 2 X = 2 (X + Y) + 24
4Y + 2 X = 2 X + 2 Y + 24
4 Y – 2 Y + 2 X – 2 X = 24
2 Y = 24
Y = 24/2
Y = 12
Then, the number of buffaloes Y = 12.
Hence, the answer is (4) 12.