<human>:  The ratio of cows to bulls in a barn is 10:27. If there are 555 cattle on the farm, how many bulls are on the farm?
<bot>: How many cows and bulls are there? ** The total ratio of cattle on the farm is 10+27 = <<10+27=37>>37
How many bulls are there? ** Since the fraction that represents bulls from the total ratio is 27/37, the number of bulls on the farm is 27/37*555 = <<27/37*555=405>>405
#### 405