If it takes 70 workers 3 hours to disassemble the exhibition rides at a small amusement park, how many hours would it take 30 workers to do this same job?  Choose the correct option.
A) 40/3  B) 11  C) 7  D) 7/3  E) 9/7
70 Workers = 3 hours then,   1 Worker = 3*70 Hours   30 Workers = (3*70) /(30)= 
<gadget id="calculator">(3*70) /(30)</gadget>
<output>7</output>
7   ANSWER:7
<result>C</result>
If it takes 70 workers 3 hours to disassemble the exhibition rides at a small amusement park, how many hours would it take 30 workers to do this same job?