Question

a man walk 2000m in 30 minutes 1500m in 40 minutes and 500m in 10 minutes. Then his average speed for the whole journey in m/min is

Answer 1

Answer:

2000+1500+500/30+40+10=4000/80=50

Answer 2

Answer:

Average speed for the whole journey in m/min is 50 m/min

Explanation:

To Find:

      The average speed

Given:

     Distance walked by a man  (d1) = $2000m$

       Time taken to travel 2000 m is (t1) =$30 minutes$

      Distance walked by a man (d2)=$1500m$

      Time taken to travel 2000 m is (t2) =$40minutes$

    Distance walked by a man (d3)=$500m$

     Time taken to travel 2000 m is (t3)=$10minutes$

Then his average speed for the whole journey in m/min is

                                  $speed=\frac{distance}{time}$

                                   $speed=\frac{2000+1500+500}{30+40+10}$

                                     $speed=\frac{4000}{80}$

                                         $speed=50m/min$

    Then his average speed for the whole journey in m/min is 50 m/min

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