At what time between 7 & 8 o'clock will the hands of a watch be in the straight line but no together?

Options

A. 53/11 min past 7
B. 55/11 min past 7
C. 53/11 min past 7
D. 43 min past 7

Answer

B

Explanation

When the hands of the clock are in the same straight line bur not together they are 30 minute spaces apart At 7 o.clock they are 25 min. spaces apart.
Minute land will have to gain only 5 min.
space 55 min. spaces are gained in 60 min.
5 min spaces are gained in (60/55 * 5) min = 55/11 min
Required time = 55/11 min past 7.