A and B can finish a piece of work in 30 days, B and C can finish it in 15 days, C and A in 10 days. Time taken by them together to do this work is?

A and B can finish a piece of work in 30 days, B and C can finish it in 15 days, C and A in 10 days. Time taken by them together to do this work is?
QuestionA and B can finish a piece of work in 30 days, B and C can finish it in 15 days, C and A in 10 days. Time taken by them together to do this work is?
Typemultiple_choice
Option5 daysincorrect
Option2(1/2) daysincorrect
Option7(1/2) daysincorrect
Option10 dayscorrect

Solution

quantitative aptitude
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