sweetdelight888 sweetdelight888

20-09-2018
Mathematics

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Andrew drove his car 234 km from Dawson to Mayo in Yukon Territory in 3 h. Brian drove his truck along the same route at an average speed of 5 km/h greater than Andrew’s average speed. How much less time did Brian take, to the nearest minute.

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sweetdelight120 sweetdelight120

20-09-2018

Andrew drove at 78 km/h

Brian drove at 83 km/h

234/83 = 2.819 hours, or 169 minutes.

180-169=11

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