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A farmer has some hens and …

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A farmer has some hens and cows.The total number of feet is128. If the total number of animals are40 find how many hens and cows are there.

Posted by Yuvraj Singh 7 years, 3 months ago

CBSE > Class 06 > Mathematics

1 answers

Naveen Sharma 7 years, 3 months ago

Let number of hens = x

Number of cows = y

Then number of legs of hens = 2x

Number of legs of cows = 4y

Then

According to Ques

x + y = 40 .......(1)

x = 40 - y

2x + 4y = 128 .....(2)

put value of x in (2)

2*(40-y) + 4y = 128

=> 80 - 2y + 4y =128

=> 2y = 48

y = 24

and x = 16

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