Two buses leave Houston at the same time and travel in opposite directions. One bus averages 55 miles per hour, and the other bus averages 45 miles per hour. When will the buses be 400 miles apart?
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Answer:
after 4 hours
Step-by-step explanation:
distance travelled by bus 1 in 1 hour=55 miles
distance travelled by bus 2 in 1 hour= 45 miles
there fore total distance between buses in 1 hour =45+55 miles
=100 miles
there fore 400 miles will be travelled in 4 hours
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