Answer:
105mins
Explanation:
So if it takes them 2 miles in 30 mins. You have to find how much it takes them to hike for 1 mile. For that, you would have to do 30 divided by 2 which equals 15. So, if it takes him 15min to go for 1 mile you have to multiply 15 times 7. So it would take 105mins for him to hike for 7 miles.