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An impact printer prints 1 page using regular type and 3 pages using bold type in 23 seconds. If the printer prints 2 pages usi...Asked by Daley
An impact printer prints 1 page using regular type and 3 pages using bold type in 23 seconds. If the printer prints 2 pages using regular type and 4 pages using bold type in 34 seconds, how long does it take to print 1 page for each typeface?
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Answered by
bobpursley
Use the rate equation
page= rate*time
Time= pages/rate where rate is pages/sec
23=1/rp + 3/rb and
34=2/rp + 4/rb
This is easiest solved by solving for 1/rp and 1/rb
multiply the numerator by 2, then subtracting,
46-34= (1/rb)(6-4) solve for 1/rb, that give you time per bold page, then go back and solve for 1/rp
page= rate*time
Time= pages/rate where rate is pages/sec
23=1/rp + 3/rb and
34=2/rp + 4/rb
This is easiest solved by solving for 1/rp and 1/rb
multiply the numerator by 2, then subtracting,
46-34= (1/rb)(6-4) solve for 1/rb, that give you time per bold page, then go back and solve for 1/rp
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