Problema Solution
Frank can type a report in 3 hours. James takes 4 hours to type it. How long will it take the two of them typing together?
Answer provided by our tutors
franks 1 hour work = 1/3
james 1 hour work = 1/4
frank + james 1 hour work = 1/3 + 1/4
= 4+3 = 7/12
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12
5
Hence both can do the work in 12/7 = 1.7 days or write 12/7 only or write or 1 ----
7