SOLUTION: It takes Bethany 3 hours to proof a chapter of Hawkes Learning Systems' College Algebra book and it takes Nina 6 hours. How long would it take them working together? (Round your an

Algebra ->  Rate-of-work-word-problems -> SOLUTION: It takes Bethany 3 hours to proof a chapter of Hawkes Learning Systems' College Algebra book and it takes Nina 6 hours. How long would it take them working together? (Round your an      Log On