At a farm the ratio of cows to horses was 10: 3. if there were 20 cows at a farm how many horses were there

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

Ithink is the abswer b