how 100 animals if cow cost Rs 20. buffelow cost Rs 1 & goat cost Rs 0.20 in Rs 100?
Answers
Given : cow cost Rs 20. buffalos cost Rs 1 & goat cost Rs 0.20
To Find : 100 Animals in 100 Rs
Solution:
Goat cost 0.2 Rs hence must be multiple of 5 hence let say
Goats = 5G
Cow = C
Buffalos = 100 - 5G - C
Cost =0.2*5G + 20C + 1(100 - 5G - C)
= G + 20C + 100 - 5G - C
= 100 + 19C - 4G
100 + 19C - 4G = 100
=> 19C - 4G = 0
=> C = 4 and G = 19 or C = G = 0
C = G = 0 => 100 buffalos in Rs 100
C = 4 and G = 19
Cow = 4 80
Goats = 95 19
Buffalos = 1 1
100 100
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