Question

At Lisa's printing Company LLC there are two kinds of printing presses model a witch can print 70 bucks per day and model B which can print 55 bucks per day the company owns 14 total printing presses and this allows them to print 905 bucks per day how many of each type of price do they have?

Answer 1

Model A is 9

Model B is 5

Explanation:

At Lisa's printing Company LLC there are two kinds of printing presses model.

Let x = the number of model A printing press.

Let y = the number of the model B printing press.

model A can print 70 bucks per day and model B can print 55 bucks per day.

The total number of both models prints 905 bucks per day.

This means

70x + 55y = 905 - - - - - - - - -1

The company owns 14 total printing presses. This means

x + y = 14 - - - - - - - - - -2

x = 14-y

Put x = 14-y in equation 1

70(14-y) + 55y = 905

980 -70y + 55y = 905

-15y = 905-980= -75

y = -75 / -15= 5

x = 14-y = 14-5

= 9