Building construction time

Two workers will build the building in 10 hours. How many hours would they have built the building if three more workers had helped them?

Final Answer:

t =  4 h

Step-by-step explanation:


2·10 = t·(2+3)

5t = 20


t = 20/5 = 4

t = 4

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You need to know the following knowledge to solve this word math problem:

algebrabasic operations and conceptsUnits of physical quantitiesthemes, topicsGrade of the word problem

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