traveling from city A and B,John dives for 1 hour at 50 mph.and for 3 hours at 60 mph.what was his a average speed of his trip?
traveling from city A and B,John dives for 1 hour at 50 mph.and for 3 hours at 60 mph.what was his a average speed of his trip?
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Answer:
57.5mph
Step-by-step explanation:
this is a case of weighted average.
the average speed is given by
(50*1+3*60)/4=57.5mph