26-02-2016
Mathematics

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3 people built a house in 15 days how long will it take 5 people to build the same house

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Аноним Аноним

26-02-2016

It's basically a proportion/rate/ration problem so here:

3 people : 15 days = 5 people : x days

So first find how many days it takes with 1 person and you can do so by division:
1 person : 5 days

Now multiply by 5 people:
1 person : 5 days = 5 people : 25 days

Hope that helps

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