Answer:
Time taken by Mary to get to Brandon = 3 hours
<em>Note: The complete question is found in the attachment below</em>
Step-by-step explanation:
Step 1: Determining the average speed of Mary
At the sign, it shows that Mary has travelled 30 km from Apton in 2 hours to get to the sign.
Therefore, the average speed of Mary is given by;
average speed = total distance/time taken
average speed = 30 km/ 2 hours = 15 km/hr
Step 2: determining the time taken to get to Brandon
Also, from the sign, it can be seen that Brandon is still 45 km ahead. Since Mary continues at the same speed, the time taken will be;
time taken = total distance/average speed
time taken = 45 km/ 15 km/hr
time taken = 3 hours
