If three bakers can prepare 15 cakes in 60 minuets, if they continue working at the same rate, how many cakes can they make in 3 hours?

If three bakers can prepare 15 cakes in 60 minutes, and there are 3 hours in 180 minutes, then the three bakers can prepare 15 cakes in 180 minutes as well. Therefore, they can prepare 15 cakes in 3 hours.