Bert has some cows, horses and dogs, a different prime number of each.(adsbygoogle = window.adsbygoogle || []).push({});

If the number of cows (c) is multiplied by the total of cows and horses (c+h), the product is 120 more than the number of dogs (d), that is:

c*(c+h) = 120 + d.

How many cows, horses and dogs does Bert have?

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# A pet and prime problem

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