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August 21, 2014

August 21, 2014

Posted by **Molly** on Tuesday, June 19, 2012 at 3:13pm.

- algebra -
**Henry**, Wednesday, June 20, 2012 at 2:57pmX mi/h = Molly's speed.

(X-12)mi/h = Bus's speed.

Mary's distance and the bus's are equal:

d1 = d2

0.5*x = 0.75(x-12)

Multiply both sides by 4:

2x = 3x - 36

2x - 3x = -36

-x = 36

X = 36 mi/h.

d = V*t = 36 * 0.5 = 18 Mi.

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