In the Delhi zoo, there are some ducks and rabbits. If the heads are counted there are 160, while the legs are 450. What will be number of ducks in the zoo?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 95
Every animal has one head; a duck has 2 legs and a rabbit has 4. If all 160 animals were ducks, there would be only 320 legs, and each rabbit adds 2 legs more.
Legs if all were ducks \(=160\times2=320\)
Extra legs \(=450-320=130\), and each rabbit gives 2 of them
Rabbits \(=130\div2=65\)
Ducks \(=160-65=95\)