Final answer:
To find out how many carrots were left for the other elephants, subtract the number of carrots given to one elephant from the total number of carrots.
Step-by-step explanation:
To find out how many carrots were left for the other elephants, we need to subtract the number of carrots given to one elephant from the total number of carrots. In this case, the zookeeper bought 9 bunches of carrot, and each bunch had 5 carrots. So the total number of carrots is 9 * 5 = 45. The zookeeper gave one elephant 24 carrots, so the number of carrots left for the other elephants is 45 - 24 = 21.