Join ExamsbookAnswer : 3. "6 days"
A and B can do a work in 4 hours and 12 hours respectively. A starts the work at 6 AM and they work alternately for one hour each. When will the work be completed?5
Q: A and B can do a work in 4 hours and 12 hours respectively. A starts the work at 6 AM and they work alternately for one hour each. When will the work be completed?
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- 25 daysfalse
- 36 daystrue
- 47 daysfalse
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Answer : 3. "6 days"
Explanation :
Answer: C) 6 days Explanation: Work donee by A and B in the first two hours, working alternatively = First hour A + Second hour B = (1/4) + (1/12) = 1/3. Thus, the total time required to complete the work = 2 (3) = 6 days
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