1.

Bhuvan has some hens and some cows. If the total number of animal-heads are 71 and the total number of feet are 228, how many hens does Bhuvan have ?(a) 43       (b) 32(c) 24(d) Cannot be determined(e) None of these

Answer» (e) Let Bhuwan have x hens and y cows
According to the question,
x + y = 71 ...(i)
2 x + 4y = 228 ...(ii)
Multiply equation (i) by 4 and subtract equation (ii)
from it :
4x + 4y – 2x – 4y = 284 – 228
or, 2x = 56
or, x= 56/2 =28
Number of hens = 28


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