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3 years ago

1. It takes 45 minutes for two people to clean six identical rooms. How

Mathematics

2 answers:

Elena L [17]3 years ago

8 0

Answer:

To clean 20 identical rooms 5 people will take 1 hour .

Hope It Helps You.

IgorLugansk [536]3 years ago

5 0

Answer: 5 people will clean 20 rooms in 1 hour.

Step-by-step explanation:

45 minutes is 45/60 = 0.75 hours

The two people invested 2(0.75) = 1.50 man•hrs to clean 6 rooms

each room took 1.5/6 = 0.25 man•hr/room

To clean 20 rooms will take 20(0.25) = 5 man•hrs

5 man•hrs/5 people = 1 hr.

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