Question

The travel graph of John and Kate is shown.

What is Kate's average speed in km/h for the trip?

• A. $10$ km/h
• B. $20$ km/h
• C. $30$ km/h
• D. None of these

Answer 1

The correct option is B $20$ km/h

In give graph Kate Start travelling at time $10:30$ and reach to his destination at $12:00$ Hence time taken by Kate is $1.3hr$ but in numeric value $1.5$ and He covers the distance of 30km

$averagespeed=\frac{distancedcovered}{timetaken}$

$speed=\frac{30}{1.5}$

$speed=20km/h$