We are told that the carton contains a total of 50 packets each containing an equal amount of staples. If the total number of staples in the packet is 25000, we have to divide the total number of staples by the total number of packets to find out how many staples each packet has. This calculation is shown below,
Each packet contains 500 staples. The basic fact we use is the fact that each packet contains the same number of staples.