A car travels 42kms in 20minutes. What is the average speed on km/hour?

Question

A car travels 42kms in 20minutes. What is the average speed on km/hour?

Answer 1

So we are looking for its speed in km/h..

    given

  speed---? kph

  distance---42 km

   time---20 min -(convert this first to hour..so 20min *  

                                            1 hour/60 min)-----0.33 hour

then just substitute this value to the formula

        s=d/t

          =42 km/0.33 h

          =127.27 kph

as easy as that...

Answer 2

42 x 3 = 126km/h

Answer 3

well start with an hour- how many times does 20 mins go into an hour ----- 3 (60min)

so 42 times 3

126 km per hour

But to find out the average speed per hour you need more info.

you need kph

You shoud rephrase your question - A car travels 42km in 20min. What is the distance of km/hr