At what time between 4 and 5 o'clock are the hands of a clock together?

Question

Accepted Answer

(A) 4:21 9/11. Explanation: Minute hand gains 55 min over hour hand in 60 min. At 4, minute is 20 min behind hour. Time = (20×60)/55 = 1200/55 = 21 9/11 min past 4.