Answer:
Her average speed was 60 miles per hour.
Step-by-step explanation:
150 divided by 5 is 30.
30 x 2 = 60
Because 2 1/2 contains 5 half hour.
When you get that single half hour you times it by 2 since 1 hour is made up of 2 half hour. Which makes 60 miles per hour.
