Answer:
<u>The three families will stop at the same place at 1,200 kilometers.</u>
Step-by-step explanation:
1. Let's check all the information given to answer the question:
Family A or 1 stops every 240 kilometers
Family B or 2 stops every 200 kilometers
Family C or 3 stops every 300 kilometers
2. After how many kilometers will they stop at the same place?
Family A or 1 will stop at 240, 480, 720, 960 and 1,200 kilometers.
Family B or 2 will stop at 200, 400, 600, 800. 1,000 and 1,200 kilometers.
Family C or 3 will stop at 300, 600, 900. and 1,200 kilometers.
<u>As we can check the first common stop will be at 1,200 kilometers.</u>
