Question

a car tarvels first 100 km in 5/2 hours band next 30km in 1/2 hour . what is its average speed​

Answer 1

Answer:

50km/hr

Step-by-step explanation:

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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