<PRE><B>Question 754435</B>
Sam lives 50 miles away from his parents house.
 Driving to visit one day, he drove the first 25 miles at 70mph,
 the next 10 miles at 50 mph, and the last 15 miles at 60mph.
 How much time, if any, would be lost or gained if Sam traveled the
 entire 50 miles at a steady speed of 60 mph?
:
Find the time if he traveled the whole way at 60 mph
{{{50/60}}} = .833 hrs
:
Find the time of 50 mi at different speeds
t = {{{25/70}}} + {{{10/50}}} + {{{15/60}}}
t = .807 hrs
:
.833 - .807 = .026 hrs lost at all 60 mph
:
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