If there are 200 questions in a 3 hr examination. Among these questions are 15 type A problems, which requires twice as much as time be spent than the rest of the type B problems. How many minutes should be spent on type A problems?  Pick
A) 72 min  B) 25.11628 min  C) 70 min  D) 74.11682 min  E) 76 min
x=time for type 25.11628 min prolems   2x=time for type A problem   total time=3hrs=180min   185x+15*2x=180   x=180/215   x=0.837209   time taken for type A problem=15*2*0.837209=25.11628min   ANSWER:25.11628 min
<result>B</result>
If there are 200 questions in a 3 hr examination. Among these questions are 15 type A problems, which requires twice as much as time be spent than the rest of the type B problems. How many minutes should be spent on type A problems?