A & B can together do a job in 20 days, B & C in 24 days & A and C in 30 days. Find the number of days required by A, B & C together to do the same job.
A & B can together do a job in 20 days, B & C in 24 days & A and C in 30 days. Find the number of days required by A, B & C together to do the same job.
Option 1 -
12 days
Option 2 -
8 days
Option 3 -
32 days
Option 4 -
16 days
Asked by Shiksha User
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1 Answer
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Correct Option - 4
Detailed Solution:Let the total work by LCM of 20, 24 and 30 i.e. 120 units
Work done per day by A and B = a + b =
Work done per day by B and C = b + c =
Work done per day by A and C = a + c =
2 (a + b + c) = 15
So, a + b + c = 7.5
Required number of days =
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