two man can do a piece of work in 6 hours and 4 hours respectively. After the first has worked for 2 hours he is joined by the other. By when should the work be completed?
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Answered by
0
Answer:
more 2 hours he should complete the peice of work
Answered by
1
Answer:
The first worker completes 1/6 of the job per hour. After 2 hours, 1/3 is done and 2/3 of the job remains.
The second worker completes 1/4 of the job per hour.
Working together, they complete
16+14=512 of the job per hour.
23 job ×1 hour512job=85 hours= 1 hour and 36 minutes
The job takes a total of 3 hours and 36 minutes.
Step-by-step explanation:
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