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January 29, 2015

January 29, 2015

Posted by **Kelly** on Tuesday, October 25, 2011 at 10:43am.

- Algebra-km/h -
**Steve**, Tuesday, October 25, 2011 at 12:09pmm=j+4

60/j = 72/m

60/j = 72/(j+4)

60(j+4) = 72j

60j + 240 = 72j

240 = 12j

20 = j

24 = m

They both bike for 3 hours to cover the indicated distances.

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