tom and dick

Topic: Proportional Reasoning
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Tom and Dick are digging holes, and Tom's working twice as fast as Dick. After Dick gets lazy and "ditches:" Tom, he needs to know how long it will take him to dig 12 holes by himself.

Common Core Standards: 6.RP.3
Problem #: 
163 (2011-2012)
Problem Difficulty Level: 4 [?]