Question
CIVICS > ELECTION_COMMISSION
1) A and B can do a work in 12 days B and C can do it in 15 days C and A can do it in 20 days.
Then the number of days required to complete the work A,B,C together is
A) 5B) 10
C) 15D) 20
View Answer        JULY 2014
Answer : 10




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