Posted by **steve** on Sunday, November 28, 2010 at 5:28pm.

find unit rate 40 textbooks weigh 120 pounds

- math -
**Ms. Sue**, Sunday, November 28, 2010 at 5:32pm
Use this proportion, cross multiply and solve for x.

40/120 = 1/x

- math -
**Jen**, Sunday, November 28, 2010 at 9:07pm
But how do you know all the textbooks weigh the same amount? Poorly written question..

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