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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?

5
6
7
7 1⁄2

Correct Answer: 6

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.

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