Math, asked by nirmafriends, 1 year ago

Twelve people can clean an office building in 3 hours .how long whould it
take 4 people?

Answers

Answered by kunal4201

15

Answer:

9hours

Step-by-step explanation:

Same amount of work in both the condition

therfore,

12×3=4×k

k=(12×3)/4

k=9hrs

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