Solve the Problem $65 \frac { 1 } { 6 }$

Multiple Choice

Solve the problem.
-An experienced accountant can prepare a tax return in 17 hours. A novice accountant can do the job in 23 hours. How long will it take them to do the job working together?

A) $65 \frac { 1 } { 6 }$ hours
B) $\frac { 1 } { 391 }$ hours
C) $\frac { 1 } { 40 }$ hours
D) $9 \frac { 31 } { 40 }$ hours