The battery of a cell phone is enough for 9 hours when the phone is off and 1.5 hours when the phone is on. If the battery of my fully charged phone was discharged in 8 hours, then how long did I have it on?
The battery of a cell phone is enough for 9 hours when the phone is off and 1.5 hours when the phone is on. If the battery of my fully charged phone was discharged in 8 hours, then how long did I have it on?
Chapter7: Rational Expressions And Functions
Section7.5: Solve Applications With Rational Equations
Problem 308E: Brian can lay a slab of concrete in 6 hours, while Greg can do it in 4 hours. If Brian and Greg work...
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