Homework Help: Math

Posted by Jessica on Saturday, April 21, 2012 at 3:22pm.

Jan and Nika ride their bikes. Jan rides 5 miles per hour for 1 hour then rides at ten miles per hour for 30 minutes.Nika rides at a constant 8 miles per hour. the tripss cover the ssme distance. Forr hoew many minutes does Nika ride ?

Math - Ms. Sue, Saturday, April 21, 2012 at 3:25pm
5 mph for 1 hour = 5 mi
10 mph for 1/2 hour = 5 mi

8/1 = 10/x

8x = 10
x = 10/8 = 1 1/4 hours

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