Homework Help: pyramids

Posted by Eloise on Saturday, January 8, 2011 at 5:33pm.

a car travels 35 km in the first 20 minutes, 43 km in the second 30 minutes and 19 km in the last 18 minutes of a trip. what is the average speed in Km/mn?

pyramids - Ms. Sue, Saturday, January 8, 2011 at 5:43pm
35 + 43 + 19 = 97 km

20 + 30 + 18 = 68 mn

97 / 68 = 1.426 km/mn

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