Worker A finishes a piece of work 7/8 hours whereas worker B finishes the same work in 3/4 hours who finished the work faster and by how much time.
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Step-by-step explanation:
The 1st worker speed is 1/8 = 0.125 of the job per hour, 1/4 = 0.25 for the 2nd and the 3rd.
So the total speed of all 3 together is 0.625, so it will take them 1/0.625 = 1.6 hours (or 96 minutes) to complete the job.
Why do such type questions appear here regularly? It is a basic math, requires just basic calculations…
Unless it is a question on project management ;)
HOPE SO IT WILL HELP YOU
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