Cez005 wrote:

There are twice as many dog owners as cat owners, and the number of owners of both animals is double the number of cat owners. If 200 owners own both animals, how many owners own only a dog?

A. 100

B. 200

C. 400

D. 600

E. 700

Kudos if you like the q!

"the number of owners of both animals is double the number of cat owners"

is not possible. There is probably a typo.

You need to correct it to "the number of owners of both animals is double the number of only cat owners"

Both = 200

Only cat owners = 100

Total cat owners = 200+100 = 300

We know "There are twice as many dog owners as cat owners"

So total dog owners = 2*300 = 600

Only dog owners = Dog owners - Both = 600 - 200 = 400

Answer (C)

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Karishma

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