Question

A CAR MOVES A TOTAL OF 2OOKM IN 4 HOURS. WHAT IS THE AVARAGE SPEED OF CAR?​

Answer 1

Answer:

Consider the units that your answer will take. In other words, how is speed measured? In this case, kilometers per hour (kph). You want to know how many kilometers were covered in one hour.

Kilometers per hour is the same as kilometers/hour, so take the number of kilometers and divide it by hours. 200 km/5 hours = 40 kph.

If you are stuck on a problem like this and can't figure it out, start at the end and work backwards. Look at the units of the answer. This should give you the best clue about how to get there. This is called dimensional analysis, a big term for “check your units.” Just checking units has helped me through many, many confusing problems.

Answer 2

Answer:

Speed =  Distance/time

           = 200/40

           = 5km/hr