Person A makes 300 cakes in 2 hours. Person B makes 300 cakes in 2 hours. Person C makes 300 cakes in 3 hours
How long does it take all 3 working together to make 300 cakes. (Assume no synergies and rates are additive. So Person A and Person B would make 600 cakes in 2 hours together).
So I wasn't sure what to do here so I tried to figure out the per hour rate of each.
Person A makes 150 cakes in an hour. Person B makes 150 cakes in an hour. Person C makes 100 cakes in an hour.
So that wasn't getting me anywhere. All I know is that in an hour, they all make 150+150+100 = 400 cakes. So, to make 300 cakes, they need less than 1 hour.