You printed your 40-page reaction paper.
You observed that printer A in the print shop finished
printing in two minutes. How long will it take printer A
to print 160 pages? How long will it take printer A to
print p pages? If printer B can print x pages per
minute, how long will it take to print p pages? The rate
of each printer is constant.
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How long will it take printer A to priny 160 pages?
Answer: 8 minutes
How?
40 is to 2 minutes
80 is to 4 minutes
120 is to 6 minutes
160 is to 8 minutes