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2015-05-25T19:17:47+08:00

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It is obviously Vince who sleeps more since 9>7.

Since 1 hr = 60 minutes the difference in their times is equal to:
(9hrs-7hrs)* \frac{60mins}{1hr} =2hrs* \frac{60mins}{1hr} =120minutes
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2015-05-26T10:44:23+08:00

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Vince sleeps more by:
9 hours-7 hours=2 hours

Convert to minutes:
2 hours(\frac{60 minutes}{1 hour})=120 minutes

Hope this helps =)

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