SOLUTION: An automobile is driven at 30 mph for 12 min, then at 40 mph for 20 min, and
finally 50 mph for 8 min.
(a) Determine the average speed over the interval.
(b) How fast must the
Algebra.Com
Question 1165400: An automobile is driven at 30 mph for 12 min, then at 40 mph for 20 min, and
finally 50 mph for 8 min.
(a) Determine the average speed over the interval.
(b) How fast must the automobile move in the last 8 min to obtain an average speed of 35
mph?
Answer by josgarithmetic(39621) (Show Source): You can put this solution on YOUR website!
(a)
-------------miles of the entire distance.
-----------------------time for the entire distance.
-----------average speed
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