Ravi and Kumar are working on an assignment. Ravi takes 6 hours to type 32 pages on a computer, while Kumar takes 5 hours to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages?

7 hours 30 minutes
8 hours
8 hours 15 minutes
8 hours 25 minutes

Correct Answer: 8 hours 15 minutes

Explanation:

Number of pages typed by Ravi in 1 hour =	32	=	16	.
	6		3

Number of pages typed by Kumar in 1 hour =	40	= 8.
	5

Number of pages typed by both in 1 hour =	❨	16	+ 8	❩	=	40	.
		3				3

∴ Time taken by both to type 110 pages =	❨	110 x	3	❩	hours
			40

= 8	1	hours (or) 8 hours 15 minutes.
	4

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