Question

One man can do the piece of work in 3 hours another man can do the same piece of work in 2 hours. How long time they take if they work together​

Answer 1

Answer:

Let one hour work of first man be=x

Let one hour work of other man be =y

Total work to be done =z=3x=2y

Let them take n hours to complete the work together

⇒n(x+y)=z

⇒n(x+y)=3x

⇒n(x+

2

3x

)=3x

⇒n(

2

5x

)=3x

⇒n=

5

6

=1.2 hours

or (1.2×60=72 minute )

Step-by-step explanation:

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