if 3 people can build 12 sheds in 4 days, how long will it take for 5 people to build 15 sheds?

The amount of time it would take for 5 people to build 15 sheds is; 3 days.
Since, according to the question;
In essence; By proportion 1 person can build 4sheds in four days.
We are required to determine how long it will take 5 people to build 15 sheds.
Therefore: for 1 person;
Therefore, it takes 1 person 15 days to build 15 sheds.
Ultimately, when the job is divided between 5 people; It takes 15/5 = 3 days to build 15 sheds.
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