Question

11. In a group of cows and hens, the number of
legs are 14 more than twice the number of
heads. Find the number of cows?
(a) 5
(b) 7
(c) 10
(d) 12​

Answer 1

Answer:

(B) 7

Step-by-step explanation:

let the no. of cows= x

Total no.of legs=4x

Total no.of heads of cows= x

let the no.of hens=y

Total no.of legs of hens= 2y

Total no.of legs=y

Therefor, Total no.of heads= x+y

Total no.of legs=4x+2y

Given no.of legs are 14 more than twice the no.of heads

4x+2y=14+2(x+y)

4x+2y=14 +2x+2y

2x=14

x=14/2

x=7//-

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