Question

Charles is going campin with his family. His campsites 7/8 miles away. They walk at a steady speed of 1 1/2 mi/hr. How many minutes will it take them to get to the campsite?

Answer 1

`x-\ travel\ in\ minutes\\\\From\ proportion:\\\\1.5\ \ \ \ -\ \ \ \ 60\\(7)/(8)\ \ \ \ \ \ -\ \ \ \ x\\\\1.5x=60\cdot(7)/(8)\\\\1.5x=(420)/(8)\\\\1.5x=(105)/(2)\\\\1.5x=52.5\ \ \ \ \ |:1.5\\\\x=35\ minutes`