Math, asked by bchari52, 10 months ago

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 archishanori
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

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