A man completes 5/8 of a job in 10 days. At this rate, how many more days will it takes him to finish the job?

A man completes 1-div-5by8 of a job in 10 days. At this rate, how many more days will it takes him to finish the job?

Answer: Option B

Explanation:

Work done =	5
	8

Balance work =		1 -	5		=	3
			8			8

Let the required number of days be x.

Then,	5	:	3	= :: 10 : x		5	x x =	3	x 10
	8		8			8		8

x =		3	x 10 x	8
		8		5

x = 6.