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In a group of cows and hens,the number o...

In a group of cows and hens,the number of legs are 14 more than twice the number of heads.How many cows are in the group?

A

5

B

7

C

11

D

12

Text Solution

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The correct Answer is:
B
Let the number of cows be x and the number of hens be y,then
number of legs in the group =4x+2y
Number of heads in the group =X+y
`implies` 4x+2y=2(x+y)+14 which gives x=7
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