Legs

Cancer has 5 pairs of legs. The insect has 6 legs. 60 animals have a total of 500 legs. How much more are cancers than insects?

Result

d =  10

Solution:

5*2*r+6*h = 500
r+h = 60
d = r-h

6h+10r = 500
h+r = 60
d+h-r = 0

d = 10
h = 25
r = 35

Calculated by our linear equations calculator.

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