At what time between 5.30 and 6 will the hands of a clock be at right angles?
Select the correct option:  A) 43	7/12	min. past 5.  B) 43	7/13	min. past 5.  C) 42	7/11	min. past 5.  D) 42	7/18	min. past 5.  E) 43	7/11	min. past 5.
At 5 o'clock, the hands are 25 min. spaces apart.   To be at right angles and that too between 5.30 and 6, the minute hand has to gain   (25 + 15)= 
<gadget id="calculator">  (25 + 15)</gadget>
<output>40</output>
40 min. spaces.   55 min. spaces are gained in 60 min.   40 min. spaces are gained in 60/55 x 40 min= 43 7/11 min.   Required time = 43	7/11	min. past 5.   Answer: 43	7/11	min. past 5.
<result>E</result>
At what time between 5.30 and 6 will the hands of a clock be at right angles?