Question

A car travels first 100km in 2 ¹/2hours and next 30km in 1/2 hour ​ what is its average speed?

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Answer 1

Answer:

We know Speed = Distance / time

Distance given = 100 kilometer

Time = 5/2 hours = 2.5 hours

First Speed of car = 100km/2.5 hours

First speed of car = 40 kilometer / hour

For second speed:

Distance = 30 kilometer

Time = 1/2 hour = 0.5 hour

Speed = 30 km/ 0.5 hrs.

= 60 kilometer/hour

Average speed of car = 40 kiloneter/hr + 60 kilometer/ hour

= 100 kilometer/hr / 2

Average speed of car = 50 kilometer/hour

Answer Average speed of the car = 50 kilometer/hour

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Time 5/2 = 2.5 hours Distance is 100 km Therefore 100km ÷ 2.5 hours = Speed 40 km/hour..

Time 0.5 Distance = 30km Speed = 60km/hour

Total Time Taken = 3 hours, Total Distance of Journey = 130km,

The answer to the question is The Average Speed of Journey Was = 43.33mph

Average speed of car = total travelled distance/ total taken time

= (100+30)/(5/2 + 1/2)

= 130/3 = 43(1/3) km/hr. Ans.

Step-by-step explanation:

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