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Retake_GMAT · 07-24-2008, 03:33 AM

P = 10/60 or 1R/6sec
Q = 40/60 or 2R/3sec = 4R/6sec

which means Q gains 3Revolutions every 6 seconds. For Q to gain 6, we need another 6seconds to pass. Which means 2sets of 6seconds have passed or 12seconds.
Ans : 12seconds

07-24-2008, 03:33 AM	#2 (permalink)
Retake_GMAT Chill Join Date: May 2008 Location: India, Bangalore Posts: 862	P = 10/60 or 1R/6sec Q = 40/60 or 2R/3sec = 4R/6sec which means Q gains 3Revolutions every 6 seconds. For Q to gain 6, we need another 6seconds to pass. Which means 2sets of 6seconds have passed or 12seconds. Ans : 12seconds