Let's say Elisa's Printing Company LLC has x Model A printing presses and y Model B printing presses.
We know that x + y = 14 because the total number of printing presses is 14.
We also know that 70x + 55y = 905 because the total number of books printed is 905.
We can solve these equations simultaneously to find the values of x and y.
From the first equation, we can express x in terms of y: x = 14 - y.
Substituting this expression for x in the second equation, we get: 70(14 - y) + 55y = 905.
Expanding the brackets, we get: 980 - 70y + 55y = 905.
Combining like terms, we get: -15y = -75.
Dividing both sides of the equation by -15, we get: y = 5.
Substituting this value back into the first equation, we get: x + 5 = 14.
Subtracting 5 from both sides of the equation, we get: x = 9.
So, Elisa's Printing Company LLC has 9 Model A printing presses and 5 Model B printing presses. Answer: \boxed{9, 5}.
At Elisa's Printing Company LLC there are two kinds of printing presses: Model A which can print 70 books per day and Model B which can print 55 books per day. The company owns 14 total printing presses and this allows them to print 905 books per day. How many of each type of press do they have?
1 answer
1 answer