A and B were assigned to do a job for an amount of ₹ 1,200.

Home » Aptitude » Time and Work » Question

A and B were assigned to do a job for an amount of ₹ 1,200. A alone can do it in 15 days, while B can do it in 12 days. With the help of C, they can finish in 5 days. The share of amount that C earns is

Using Rule 25,
According to the question,

	1	+	1	+	1	=	1
	15		12		C		5

Let C's work in day be	1
	C

⇒	1	=	1	-	1	-	1
	C		5		15		12

=	12 - 4 - 5	=	1
	60		20

∴ A : B : C =	1	:	1	:	5	= 4 : 5 : 3
	15		12		20

∴ C’s share

=	3	× 1200 = ₹ 300
	12