SOLUTION: Phil needs to practice free throws 7/10 of an hour each day. If he already practiced 3/10 of an hour today. How much longer does he need to practice?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: Phil needs to practice free throws 7/10 of an hour each day. If he already practiced 3/10 of an hour today. How much longer does he need to practice?      Log On