Question

two men can do a piece of work in 6 hours and 4 hour respectively after first has done the work he is joined by other by when work be completed ​

Answer 1

Answer:

2.4 hours

Step-by-step explanation:

say the 2 people are A and B respectively

A can do 1/6 th of work in an hour

B can do 1/4 th of work in an hour

so they together can do 1/6 +1/4 work in an hour

=5/12

so work will be completed by 12/5 hours or 2.4 hours

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