65 bottles per hour is the answer because basically what you have to do is divide 1,560 by 24.
1. To do this, you want to divide 1560 by 24. This gives you 65. The bottle fills 65 bottles per hour. 2. To do this divide 4290 by 78. The result is 55. It would take the groundskeeper 55 hours to drain the pond. 3. They are similar because you break up pieces of the number and then you combine them.