Question

A farmer has some chickens and some cows. Find out the total number of chickens if the total number of heads is 50 and the total number of feet is 160.

A 22 Correct Answer Incorrect Answer
B 15 Correct Answer Incorrect Answer
C 20 Correct Answer Incorrect Answer
D 30 Correct Answer Incorrect Answer

Solution

Let the total number of cows = x Total number of chickens = y According to the question, x + y = 50 ........... (i) 4x + 2y = 160 ........... (ii) Multiplying equation (i) by 4 and subtracting (ii) by (i) , we get 2y = 40 y = 20 Hence, the total number of chickens = 20

Relevant for Exams:

×