Question 1085651
Note that 41 1/2 is 
39 + 1 + 1 1/2
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1/3 of 39 is 13
1/3 of 1 is 1/3
1/3 of 1 1/2 is 1/2
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So, I have:
13 + 1/3 + 1/2
This is the same as:
13 + 2/6 + 3/6 
Which equals 13 5/6
as the time spent hauling material