que 11 and 12 plz tell me correct ans step by step plz ch name is time and work plz help me
Attachments:
Answers
Answered by
1
Answer:
16 days is correct answer
Step-by-step explanation:
12) A and B can do work in=18 days
(A+B)'s 1 day's work= 1/18
B and C can do work in=24 days
(B+C)'s 1 day's work=1/24 days
C and A can do a work in=36 days
(C+A) 's 1 day's work=1/36 days
A+B+B+C+C+A= 1/18+1/24+1/36
2(A+B+C) = (4+3+2)/72
2(A+B+C)= 9/72
A+B+C= 9/72×2
A+B+C=1/16
so they can finish the work together in
16 days
Similar questions