Solve the Problem $\frac { 11 } { 28 } \mathrm { hr }$

question 48

Multiple Choice

Solve the problem.
-Frank can type a report in 4 hours and James takes 7 hours. How long will it take the two of them typing together?

• A) \(\frac { 11 } { 28 } \mathrm { hr }\)
• B) \(7 \mathrm { hr }\)
• C) \(\frac { 28 } { 3 } \mathrm { hr }\)
• D) \(\frac { 28 } { 11 } \mathrm { hr }\)

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Definitions:

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