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 / mohitkuldeep
let total time = x hrs
55*4 + 70*(x-4) = 60*x
10x = 60
x =6
answer is 6 hrs
| Is This Answer Correct ? | 16 Yes | 1 No |
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