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A car averages 55 mph for the first 4 hours of a trip and
averages 70 mph for each additional hour. The average speed
for the entire trip was 60 mph. How many hours long is the trip?
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Answer Posted / name
assume the no of additional hours be 'x'. then total
distance is given by
55*4+70*x = 60(4+x)
which on solving, gives x=2.
which gives the total hours travelled to be 6 hours.
i think this is correct. not sure........
| Is This Answer Correct ? | 34 Yes | 5 No |
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