Math, asked by christopher29, 11 months ago

A car covers its first 72 kilometre at the speed of 60 km per hour and the rest 45 kilometre at the speed of 75 kilometre per hour find its average speed

Answers

Answered by lesasunny
0

Answer:

A car covers four successive 3 km stretches at speeds of 10 kmph, 20 kmph, 30 kmph and 60 kmph respectively. Its average speedover this distance is: (compute to one decimal place.)

Answered by streetburner
0

Answer:

65

Step-by-step explanation:

72 + 45

----------------------

(72/60) + (45/75)

= 117/(6/5 + 3/5)

= 117*5/9

= 13*5 = 65

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