What is the length of leg s in the right triangle shown?

Having a hard time understanding this question (see attachment).

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?

Jo divides a candy bar into eight equal pieces for her children to share she gives three pieces to sam three pieces to leslie and two pieces to margie rose the two month old baby does it doesn't get any what fraction shows how muchw candy each of the four children got. what's the answer to my question