Q6
Laksh takes his car out on two journeys.
The first journey is of 20 miles and takes
15 minutes. The second one is of 37.5
miles and takes 25 minutes. Find the
average speed of the two journeys
combined.
Ops: A.
83 miles per hour
B.
79 miles per hour
C.
86.25 miles per hour
D.
88.7 miles per hour
Answers
Answered by
4
Answer:
86.25 miles per hour
Step-by-step explanation:
Average speed = Total distance covered divided by total time taken
15 mins = 15/60 = 1/4 hour
25 mins = 25/60= 5/12 hour
total distance = 20+ 37.5 miles = 57.5 miles
Avg speed = (57.5) / (1/4+5/12)
= (57.5)/(8/12)
=57.5 / (2/3)
=86.25 miles per hour
Similar questions