Verified Answer :

Ratio of cows and horses at the Farm:

=> 10 : 3

There were 20 cows, Find the number of Horses

=> 10 : 3 = 20 : __

=> 20 / 10 = 2 x 3 = 6

=> thus the number of horses is 6

The ratio of cow and horses is:

=> 10 : 3 = 20 : 6

At the Farm, There are a total of 20 cows and 6 horses in a ratio of 10 : 3