This word problem is easier than when it first appeared. When you want to find the average of a set of numbers, you must add them up to get a grand total. Then take the grand total and divide by the number of numbers there are. In this case, you will add the total number of kilometers that were traveled during the trip. This is fifty kilometers plus ten kilometers. The grand total is sixty.
Then divide by the number of hours. This number is four. Divide the total number of kilometers by the total number of hours on the trip. Fifteen kilometers divided by four hours equals to fifteen kilometers per hour. Therefore, the group traveled at an average of fifteen kilometers per hour.
Answer Anonymously
Copy Link
