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January 25, 2015

January 25, 2015

Posted by **mathew** on Monday, January 14, 2013 at 11:12pm.

- math -
**PsyDAG**, Tuesday, January 15, 2013 at 12:19pmLet x = Julia's speed, then x+9 = Bianca's.

Time * Speed = Distance

4(x + x+9) = 140

Solve for x, then x+9.

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