Question

A car covers the first 55 km at the speed of 45 km / hr and next 15 at the speed of 65 km / hr . Calculate it's average speed for the whole juorney​

Answer 1

Answer:

18 ᴋᴍ/ʜ

Step-by-step explanation:

Total time taken =

15

45

hrs+

25

50

hrs+

15

25

hrs=3hrs+2hrs+

3

5

hrs=

3

20

hrs

∴ Average speed of the car =30×

20

45+50+25

=

20

120×3

km/hr=18km/hr.

Answer 2

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