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April 19, 2014

April 19, 2014

Posted by **Jessica** on Wednesday, October 3, 2012 at 7:39pm.

- Algebra -
**Reiny**, Wednesday, October 3, 2012 at 7:53pmLogans rate = 1/x

Samantha's rate = 3/x

combined rate = 1/x + 3/x = 4/x

1/(4/x) = 45

x/4 = 45

x = 180

time for Logan alone = 1/(1/180) = 180 minutes

time for Samantha alone = 1/(3/18) = 60 minutes

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