SOLUTION: if three persons are 15 kg a cock and a person is 20 kg a dog minus a cock is 40 kg what will b the weight of a person a cock and a dog

Algebra ->  Sequences-and-series -> SOLUTION: if three persons are 15 kg a cock and a person is 20 kg a dog minus a cock is 40 kg what will b the weight of a person a cock and a dog      Log On


   

Question 1058352: if three persons are 15 kg
a cock and a person is 20 kg
a dog minus a cock is 40 kg
what will b the weight of a person a cock and a dog
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
(1) +3p+=+15+
(2) +c+%2B+p+=+20+
(3) +d+-+c+=+40+
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This is 3 equations and 3 unknowns,
so it's solvable
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(1) +p+=+15%2F3+
(1) +p+=+5+
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(2) +c+%2B+5+=+20+
(2) +c+=+15+
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(3) +d+-+15+=+40+
(3) +d+=+55+
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+p+%2B+d+%2B+c+=+5+%2B+55+%2B+15+
+p+%2B+d+%2B+c+=+75+ kg
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It doesn't really make sense that a
dog is 11 times heavier than a person.
Is the data OK?