SOLUTION: Mark and Rachel both work for Smith Landscaping Co. Mark can finish a planting job in 2 hours, while Rachel takes 3 hours to finish the same job. If Mark and Rachel work together o

Question 1153687: Mark and Rachel both work for Smith Landscaping Co. Mark can finish a planting job in 2 hours, while Rachel takes 3 hours to finish the same job. If Mark and Rachel work together on the job, how long will it take them to finish.
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
Simplify and compute .

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Mark's rate, jobs per hours
Rachel's rate, jobs per hours
Their combined rate working together, jobs per hours-------The reciprocal of this will be how many HOURS per one job.
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