Tom travels 60 miles per hour going to a neighboring city and 50 miles per hour coming back using the same road. He drove a total of 5 hours away and back. What is the distance from Tom's house to the city he visited?(round your answer to the nearest miles)
Answers
Answer:
Step-by-step explanation:
The avg speed of the round trip is
2*60*50/(60 + 50) = 6000/110 mi/hr
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This is similar to parallel resistors or parallel flows, but x2
Note that the avg speed is not 55 because more time is spent going 50 mi/hr.
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= 600/11 mi/hr
d = r*t = 5*(600/11) miles round-trip
d = 1500/11 miles one-way
d =~ 136.4 miles
Answer:
City ~ Speed is 60 mph, Answer: Distance is 136.3636 miles, Time was 2.2727 hours
Home Speed is 50 mph, Answer: Distance is 136.3636 miles, Time was 2.7272 hours
Combined Time = 5 hours, Combined Distance is 272.7272 miles (rounded)
Average Speed of both journey’s is 54.545 mph.
(5h x 60m =300 mins +joint ratio of 11 (6 & 5) = 27.2727 ~ 27.2727 x 5 = 136 miles
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