How much does a watch gain or lose per day, if its hands

How much does a watch gain or lose per day, if its hands coincide in every 64 minutes?

Here, M = 64

∴ The clock gains or loses in a day by =		720	- M			60 × 24
		11				M

The clock gains or loses in a day by =		720	- 64			60 × 24
		11				64

The clock gains or loses in a day by =		65	5	- 64			60 × 24
			11				64

The clock gains or loses in a day by =	16	×	60 × 24	=	360	=	32	8	minutes
	11		64		11			11

since the sign +ve , the clock gains by 32	8	minutes.
	11

32	8	minutes loss
	11