
Nestor R. answered 01/16/20
Mathematically-oriented professional with many years of experience
The student runs 6 miles in 3/4 hour. If you look closely at the given information, you can deduce that in 1/4 hour the student will run 2 miles. This is because 2 miles is 1/3 of 6 miles and 1/4 is 1/3 of 3/4 (1/4+1/4+1/4 = 3/4).
Therefore, if the student runs 2 miles in 1/4 hour, then she can run 8 miles (4*2 miles) in 1 hour (4*1/4 hour). .