Answer: 504.91 miles
Explanation:
From the question, we are told that Trevon and his friends are going on a road trip that is 594 7/25 miles long and that they have 89 37/100 miles to reach their destination. To know how far that they've already traveled, we subtract 89 37/100 from 594 7/25.
= 594 7/25 - 89 37/100
Since the answer should be in decimal, we can change the fractions to decimal.
= 594 7/25 - 89 37/100
= [594 +(7/25 × 100)] - [89 + (37/100 × 100)]
= (594 + 0.28) - (89 + 0.37)
= 594.28 - 89.37
= 504.91 miles
They've already travelled 504.91 miles