Problema Solution
A textbook publisher has two kinds of printing presses: Model A which can print 60 books per day and Model B which can print 65 books per day. The company owns 13 total printing presses and this allows them to print 800 books per day. How many of each type of press do they have?
Answer provided by our tutors
let
a = the number of Model A presses
b = the number of Model B presses
the company owns 13 total printing presses:
a + b = 13
this allows them to print 800 books per day:
60a + 65b = 800
by solving the system of equations:
a + b = 13
60a + 65b = 800
we find:
a = 9 Model A presses
b = 4 Model B presses
click here to see the step by step solution of the system of equations:
They have 9 Model A presses and 4 Model B presses.