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?

Answer 1

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