Sebastian paints his room that has 150 square feet of wall space in 2.5 hours. How long, at this rate, will it take him to paint 60 square feet of wall space?

Not sure if this is the way to do it but if you divide 150 by 2.5 you get 60. So maybe just divide 2.5 hours by 2.5 = 1 hour?

[60 / 150] x 2.5 = 1 hour.