Question 1015568

Can someone help me solve this problem?

On a 100-mile hike, Mike walks 15 miles the first day, 10% of what is left the next day and 0.2 of the total the following day. What percent of the hike has Mike left to walk?

I also don't know what the 0.2 stands for.
<pre>If .2 of the total means: .2 of the total he has walked, the first 2 days, then he has {{{highlight_green(matrix(1,2,56.5, "%"))}}} of the trip left