>

We have given that the TIME t = 40 minutes TAKEN by the school bus to covered the distance of d= 16 km.

Find out :- school bus speed s = ? in m/s uniit or in km/hr. unit.

Now we know that,

Speed formula is S = (distance /time taken)= (d/t)

Before solving the problem we just convert all the respective units in the meter/second so the calculation will becomes easier.

Time t = 40 minutes ( 1 minute = 60 second )

Time t = (40×60) second = 2400 second.

Distance d = 16 km (1 km = 1000 meter)

Distance d = 16×1000= 16000 meter.

Now just substitute all the given values in the formula we GET,

Speed S = (distance /time taken)= (d/t)

Speed S = (16000 meter/2400 second)= 6.66666667 m/s

So take just approximately value near the two digits after the point.

Speed S = 6.67 m/s answer.

Now we have to convert it into the km /hours so it is simple just multiple the answer by (5/18) value.

Speed S = 6.67× (5/18)= 1.85277778 km /hour.

Speed S = 1.85 km /hour answer.

I hope that your doubt will be cleared up my dear friend.

Thankyou,