A cross country coach just announced that, by the end of the quarter, all students should run the 10 miles in less than 70 minutes. There are 15 students in the group.
6 of them ran 10 miles in 1 hour + 5 minutes
4 of them ran 10 miles in 1 hour + 3 minutes
2 of them ran 10 miles in 1 hour + 9 minutes
3 of them ran 10 miles in 1 hour and 10 minutes.
How many students made the goal?
6 of them ran 10 miles in 1 hour + 5 minutes
4 of them ran 10 miles in 1 hour + 3 minutes
2 of them ran 10 miles in 1 hour + 9 minutes
3 of them ran 10 miles in 1 hour and 10 minutes.
How many students made the goal?