Question

a man walks on a straight road from his home to a market 3km away with a speed 6km/h finding the market closed he instantly turns back and walks with a speed of 9km/hour find the average speed? ​

Answer 1

Answer:

first time he takes 30min and 2nd time he takes 20 min

totally he takes time 50 min or 5/6hr

total distance ( 3+3) 6km

average speed 7.2 km per hour

Answer 2

Answer:

The answer is 135 km/hr

Explanation:

First we have to take out the time :

Given:

Distance:3km

speed :9km/hr

Time is not given so:

Time =D/S

so ,

3/9/60 You understand ,

20 will come over here ,

so,the time is 30 hours,

Then,

we have to take out average speed ,

so ,the average speed =total distance /total time taken.

but the speed is given distance is not given ,so

distance =speed*time

so,9/60×30

so ,the distance is 9/2

Now ,the average speed =9/3×30

so the average speed is 135km/hr

hope its help

if it is wrong then sorry

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