It takes Frank 2 hours to build a fence. It takes Tom 7 hours to build the same fence. How long would it take to build the fence if
Frank and Tom built the fence together?
Hint: Round to the nearest hour.
OA. It would take Frank and Tom 2 hours to build the fence together.
OB. It would take Frank and Tom 9 hours to build the fence together.
OC. It would take Frank and Tom 32 hours to build the fence together.
OD. It would take Frank and Tom 3 hours to build the fence together.



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