Question

A boy walks at a speed of 3.5km/h.He reaches his school in30 mins. How far is the school far from his house

Answer 1

Answer:

1746  m or 1.74 km

Step-by-step explanation:

Here, the speed of the boy should be converted to m/s. (by multiplying the number with 5/18)

so speed=3.5km/h= 3.5 x 5/18 m/s

                               =0.97 m/s

          here time should be converted to seconds

so, time= 30min = 1800 seconds

So by using speed =distance /time

                    on substituting,

                   0.97 = distance/1800

              distance= 0.97 x 1800 m

                            = 1746 m (in meters)

                     = 1.74 km.