H.C.F and L.C.M Problems-Data Intensity 2 Questions and Answers Discussion Page.

14.	If the sum of two numbers is 55 and the H.C.F. and L.C.M. of these numbers are 5 and 120 respectively, then the sum of the reciprocals of the numbers is equal to?
	A.	55 / 601
	B.	601 / 55
	C.	11 / 120
	D.	120 / 11

Answer: Option C

Explanation:

Let the numbers be a and b.

Then, a + b = 55 and ab = 5 x 120 = 600.

The required sum =	1	+	1	=	a + b	=	55	=	11
	a		b		ab		600		120

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Published by:Michael Daani

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