a can do a work in 12 hours, while B can do it in 8 hours. with the help of C they can do it in 4 hours . how long will C take to complete the job
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Answer:
24hours
Step-by-step explanation:
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Answered by
0
Answer:
24 hours.
Explanation:
Let total work done be 1.
Work done by A in 1 hour is 1/12th of the total work and that done by B would be 1/8th of the whole work. Therefore, total work done together by A and B :
1/12 + 1/8 = 20/96 = 5/24 of the work.
Work done along with C in one hour would be 1/4th of the work.
So, Work done by A+B+C = 1/4th of the work
5/24 + C = 1/4
C = 1/4-5/24 = 1/24
Therefore, time taken by C to complete the work is 1 divided by 1/24 which gives 24 hours.
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