Kevin
Chapter7: Rational Expressions And Functions
Section7.5: Solve Applications With Rational Equations
Problem 309E: Josephine can correct her students test papers in 5 hours, but if her teacher’s assistant helps, it...
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1. Kevin is John's father. Kevin is 51 years old. Three years ago, Kevin was four times as old as his son was then. How old is John now?
2. Robin and Batman have to stuff and mail 1000 envelopes for a new marketing campaign. Batman can do the job alone in 3.5 hours. If Robin helps, they can get the job done in 4 hours. How long would it take Robin to the job by himself?
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