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CBSE Class 9 Answered

A man has some Hens and Cows. If the number of hens is 48
and number of feet is 140 .Find the number of Cows.
Asked by Rishav | 10 Apr, 2017, 11:14: AM
answered-by-expert Expert Answer

Number of heads = 48

Number of feet = 140

Let the number of hens be x and the number of cows be y.

Then,

x + y = 48    ....(1)

And, 2x + 4y = 140

i.e. x + 2y = 70     ....(2)

Subtracting (1) from (2), we get

y = 22

Hence, x = 48 - 22 = 26

Hence, the number of cows is 26.

Answered by Rashmi Khot | 10 Apr, 2017, 01:39: PM
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