Question

A car moves 10km in 5minutes.it moves 40km in next 20minutes and 70km in the next 30 minutes.calculate its speed

Answer 1

Speed one=d/t

=10km/5mins.

=2km/mins

Speed2=40km/20mins

=2km/mins

Speed3=70km/30mins

=7/3km/mins.

Here we go

Answer 2

speed = diatance/time

in first case: distance =10 km

and time =5 mint.

so, speed = 10/5= 2m/s

in second case: distance =40km

and time =20 mint.

so, speed = 40/20= 2 m/s

in third case: distance = 7 km

and time = 30km

so speed,= 70/30

=2.33...m/s

clearly here your answer is

1:2m/s

2:2m/s

3:2.33m/s

I hope u stand it......