3. Abdul, while driving to school, computes the average speed f.
his trip to be 20 km h-. On his return trip along the same
route, there is less traffic and the average speed is
30 km h-1. What is the average speed for Abdul's trip?
Answers
Answered by
3
Answer
Average speed of first trip = 20 km/hr
Average speed of returning trip = 30 km/hr
Average speed for the journey = (20 + 30)/2
= 50/2
= 25 km/hr
Answered by
0
Answer:
he average speed for the return trip is:
v = 2L/(t1+t2)
v average speed
L one way distance
t1 time taken to drive to school
t2 time taken to drive back home
Now:
t1 = L/20
t2 = L/40
Hence:
V = 2L/(L/20+L/40) = 2/(1/20+1/40) = 26.7 km/hr.
Average speed is about 27 km/hr.
Explanation:
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