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?
The total ratio of cattle on the farm is 10+27 = 
<gadget id="calculator">10+27</gadget>
<output>37</output>
37.
Since the fraction that represents bulls from the total ratio is 27/37, the number of bulls on the farm is 27/37*555 = 
<gadget id="calculator">27/37*555</gadget>
<output>405</output>
405.

<result>405</result>