On monday, there were 18 cows and 12 horses in a field. There were no other animals in the field. What was the ratio of cows to horses in the field on Monday? Remember to simplify and show your work.

To find the ratio of cows to horses, we divide the number of cows by the number of horses. The number of cows is 18 and the number of horses is 12.

Ratio = Number of cows / Number of horses
Ratio = 18 / 12

To simplify this ratio, we find the greatest common divisor (GCD) of 18 and 12, which is 6.

Ratio = (18 / 6) / (12 / 6)
Ratio = 3 / 2

Therefore, the ratio of cows to horses in the field on Monday is 3:2.