Ravi can do a piece of work in15 hours while Raman can do it in 12 hours . How long many will bothe take to do it, working together ?
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Answered by
5
Ravi can do 1/15 part of work in 1 hour
and Raman can do 1/12 part of work in 1 hour
If they work for 1 hour together they take
=1/15+1/12
=4/60+5/60
=9/60
therefore they take 60/9 hours to complete the work
and Raman can do 1/12 part of work in 1 hour
If they work for 1 hour together they take
=1/15+1/12
=4/60+5/60
=9/60
therefore they take 60/9 hours to complete the work
Answered by
1
answer is 40 you always believe on me
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