Answer:
50kmph
Explanation:
average speed = distance / time
as = 150 kilometers / 3 hour
as = 50 kmph
some times we have one of these information in other scales. that we have to change them to main scales.
for example:
if information that given to you is meter/hour you have to due to what is needed in question, change meters to kilometers or hour to seconds
the main format is:
meter per seconds
kilometers per hour
.
.
.