At what time between 5.30 and 6 will the hands of a clock be at right angles?	Pick one.
A) 43*8/11 min past 5 B) 42*7/11 min past 5 C) 43*7/11 min past 5 D) 43*7/11 min past 7 E) 44*7/11 min past 5
Explanation:   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 * 40 min= 43*7/11 min   Required time 43*7/11 min past 5   Answer is 43*7/11 min past 5
<result>C</result>
At what time between 5.30 and 6 will the hands of a clock be at right angles?