Posted by Am on .
Your younger brother is pulling his sled up a hill. Each minute he moves forward 20 feet but also slides back 3 feet. Describe how you can determine the time he needs to pull his sled 130 feet forward.
ANSWER NOW!!!

math 
Henry,
d = rt,
t = d/r = 130 ft / (20  3)ft/min = 7.65 min.