One printing machine printed 500 books in 40 hours this week. A second printing machine printed for 30 hours this week but printed books at twice the hourly rate of the first machine. How many books did the second machine print this week?

A.375
B.500
C.750
D.1,000

Can somebody help me plz

The number of books printed by the second machine this week is 750 books. Therefore, option C is the correct answer.

Given that, one printing machine printed 500 books in 40 hours this week. A second printing machine printed for 30 hours this week but printed books at twice the hourly rate of the first machine.

We need to find how many books did the second machine print this week.

The unitary method is a process by which we find the value of a single unit from the value of multiple units and the value of multiple units from the value of a single unit. It is a method that we use for most of the calculations in math.

The number of books printed by the second machine this week is 750 books.

Since the first printing machine printed 500 books in 40 hours this week, then the hourly rate will be:

= 500/40

= 12.5 books per hour.

Since the second machine printed at twice the hourly rate of the first one, this will be:

= 12.5 × 2 = 25 books per hour

Since the second machine printed for 30 hours, the total books will be:

= 30 × 25

= 750 books.

The number of books printed by the second machine this week is 750 books. Therefore, option C is the correct answer.

To learn more about the unitary method visit:

https://brainly.com/question/22056199.

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