Answer:
49 dogs
Explanation:
given that the ratio of cats : dogs is 4 : 7
which means that :
for every 4 cats, there are 7 dogs
if we express this as a unit rate, this also means that :
for every 1 cat, there are 7/4 dogs.
given that there are 28 cats, therefor the number of dogs
= number of cats x unit rate
= 28 x (7/4)
= 49 dogs