Basic Maths Data Intensity 2 Questions and Answers Discussion Page.

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Basic Maths Data Intensity 2 :: Discussion

15.	P and Q can complete a work in 20 days and 12 days respectively. P alone started the work and Q joined him after 4 days till the completion of the work. How long did the work last?
	A.	5 days
	B.	10 days
	C.	15 days
	D.	20 days

	Answer: Option C


	Explanation:
	Work done by P in 1 day = 1/20 Work done by Q in 1 day = 1/12 Work done by P in 4 days = 4 × (1/20) = 1/5 Remaining work = 1 – 1/5 = 4/5 Work done by P and Q in 1 day = 1/20 + 1/12 = 8/60 = 2/15 Number of days P and Q take to complete the remaining work = (4/5) / (2/15) = 6 Total days = 4 + 6 = 10



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Published by:Michael Daani

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