At a certain hospital, 75% of the interns receive fewer than 6 hours of sleep and report feeling tired during their shifts. At the same time, 70% of the interns who receive 6 or more hours of sleep report no feelings of tiredness. If 80% of the interns receive fewer than 6 hours of sleep, what percent F of the interns report no feelings of tiredness during their shifts?	Choose the correct choice from the following answers
A) 6  B) 14  C) 19  D) 20  E) 81
&lt; 6 hours sleep&gt;= 6 hours sleepTOTAL   Tired75--   Not Tired-0.7*X?   TOTAL80X100   Interns who receive&lt; than 6 hours sleepandNot Tired= 80 - 75= 
<gadget id="calculator">80 - 75</gadget>
<output>5</output>
5;   TOTAL interns who receive &gt;= 6 hours sleep= 100 - 80= 
<gadget id="calculator">100 - 80</gadget>
<output>20</output>
20, so interns who receive&gt;= 6 hours sleepand areNot Tired= 0.7 * 20= 
<gadget id="calculator">0.7 * 20</gadget>
<output>14</output>
14;   Interns who areNot Tired F= 5 + 14= 
<gadget id="calculator">5 + 14</gadget>
<output>19</output>
19.   Answer: 19.
<result>C</result>
At a certain hospital, 75% of the interns receive fewer than 6 hours of sleep and report feeling tired during their shifts. At the same time, 70% of the interns who receive 6 or more hours of sleep report no feelings of tiredness. If 80% of the interns receive fewer than 6 hours of sleep, what percent F of the interns report no feelings of tiredness during their shifts?