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.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
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