Mandy works construction. Shes knows that a 5 meter long metal bar has a mass of 40 kg. Mandy wants to figure out the mass (w) of a bar made out of the same metal that is 3 meters long and the same thickness.
Which proportion could Mandy use to model this situation?
a. 40/3=w/5
b. 5/3=40/w
Solve the proportion to determine the mass of the shorter bar
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