## If a car travels for 20km at 60km/h and then another 30km at 90km/h, what is the average speed of the journey? Round your answer to 2 decim

Question

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## Answers ( )

Answer:75.00 km/h.Step-by-step explanation:Average speed of the journey = total distance / total time taken.

The first part of the journey:

60 = 20/time

60 * time = 20

time = 20/60 =

Second part:

1/3 of an hour.90 = 30 / time

time = 30/90 =

1/3 of an hour.So the total distance is

50 kmand the total time is2/3 hours.Therefore the average speed

= distance / time

= 50 / 2/3

= 150/2

=

75.00 km/h.