8 men, working 7 hours a day can complete a work in 18 days. How many hours a day must 12 men work to complete the same work in 12 days? Choices:  A) 6  B) 7  C) 8  D) 9  E) 10
The number of hours required to complete the work is 8*7*18= 
<gadget id="calculator">8*7*18</gadget>
<output>1_008</output>
1008   12 × 12 × (x)= 1008   x = 7   The answer is 7.
<result>B</result>
8 men, working 7 hours a day can complete a work in 18 days. How many hours a day must 12 men work to complete the same work in 12 days?