If 5 miles = 8km, how can i solve this problem?

Miss Douglas
Year 6 Teacher
Hi, my name is Miss Douglas. I am well travelled, and love to take a risk on my adventures. I have climbed Mount Everest (to base camp), fished in Central America, and boarded down an active volcano! Ask me about the amazing place I have been.
Tito
Ivy has 100 miles left to get to Paris.