45 workers work 8 hours to dig a hole 30 meters deep. How many extra workers should be hired to dig another hole 45 meters deep by working for 6 hours?
Choose the correct choice from the following answers:
A) 25 B) 35 C) 45 D) 55 E) 65
45 workers * 8 hours / 30 meters = x * 6 / 45   x = 90 total workers     90 - 45= 
<gadget id="calculator">  90 - 45</gadget>
<output>45</output>
45 new workers   The answer is 45.
<result>C</result>
45 workers work 8 hours to dig a hole 30 meters deep. How many extra workers should be hired to dig another hole 45 meters deep by working for 6 hours?