Final answer:
Without knowing Randy's intended pace, we cannot say for certain whether she is on target. However, based on her current pace of approximately 6.67 mph, she is running slower than 7.5 mph, which indicates she might not be keeping the intended pace if her goal was to be in the faster 60 percent of runners.
Step-by-step explanation:
To determine whether Randy has been keeping the pace she intended, we would need to know what her intended pace was. Without that information, we cannot definitively say whether she is on target. However, we can use statistics given to make an assumption.
If we consider that 40 percent of runners ran at speeds of 7.5 miles per hour or less, and 60 percent ran at speeds of 7.5 miles per hour or more, we can calculate Randy's pace. Since Randy ran 10 miles in 90 minutes, her pace is 10 miles divided by 1.5 hours, which equals approximately 6.67 miles per hour. Comparing this with the statistics provided, we can infer that Randy is running slower than 7.5 miles per hour, placing her in the 40 percent category of runners who ran at slower speeds.
Therefore, unless Randy intended to run slower than 7.5 miles per hour, she has not been keeping up with the pace she might have intended, based on the information given about other runners' speeds.