i spend 20 hour to clean my garden. how long will it take if 4 people (with the same efficiency) come to join me explain step by step
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Answer:
5 hours as it is inversely proportion al
Answered by
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5 hours
20 hr = 1 person
?hr = 4 person
20 / 4 = 5 hr
20 hr = 1 person
?hr = 4 person
20 / 4 = 5 hr
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