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11-03-2020
Mathematics

contestada

Working alone, Carlos can oil the lanes in a
bowling alley in five hours. Jenny can oil
the same lanes in nine hours. If they worked
together how long would it take them?

Respuesta :

26-04-2021

Answer:

3.21 hrs.

Step-by-step explanation:

Carlos oils all lanes/5 hrs. = 1/5 of the lanes/hr. Jenny oils all lanes/9 hrs. =1/9 lanes per hour. To do all lanes 1/0.311=3.21 hrs. ANSWER: Together it takes Carlos and Jenny 3.21 hours to oil all the lanes!

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