What is the solution of 4+sqrt5x+66=x+10

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

Guys can y’all me because i don’t understand to the questions of my cousin she tell me to do the homework plz me guys

27/9=18/x a. x=9 b. x=18 c. x=6 d.x=3