1.

if a rabbit and a cat weigh 10 kg, a dog and a rabbit weigh 20 kg, a dog and a cat weigh 24 kg, how much is the weight of the dog, cat and rabbit altogether?

Answer»

LET rabbit=r,dog=d,cat=c,

ACCORDING to the question,

r+c=10

d+r=20

d+c=24

On adding the above three EQUATIONS;

r+c+d+r+d=c=10+20+24

2(d+c+r)=54

d+c+r=54/2

d+c+r=27

Thus,weight of dog+weight of cat+weight of rabbit=27 kg

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