A man, a woman and a boy can complete a job in 3, 4 and

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A man, a woman and a boy can complete a job in 3, 4 and 12 days respectively. How many boys must assist 1 man and 1 woman to complete the job in 1/4 of a day?

1 man’s 1 day’s work =	1
	3

1 woman’s 1 day’s work =	1
	4

1 boy’s 1 day’s work =	1
	12

(1 man + 1 woman)’s	1	day’s work
	4

=	1		1	+	1		=	7
	4		3		4			48

Remaining work

= 1 –	7	=	41
	48		48

Now,

1 boy’s	1	day’s work
	4

=	1	×	1	=	1
	4		12		48

∴	41	work will be done by	41	× 48 = 41 boys.
	48		48