Question

If a laser printer can print x pages per minute, in terms of x would it take the laser printer to print a 100-page document.
A) $100x$
B) $100-x$
C) $\dfrac{100}{x}$
D) $\dfrac{x}{100}$

Answer 1

Hint: In these kinds of problems, calculate the time required (in minutes) to print one page by using the given information. After getting that time to print one page, we can calculate the time required for printing ‘n’ number of pages will be equal to the ‘n’ multiplied with time required to print one page.

Complete step-by-step answer:
The laser printer can print x pages in one minutes.
So, the time required to print one page \[ = \dfrac{1}{x}\]
Now to find the 100page document print time multiply 100 with time required to print one page.
The time required to print a 100-page document = 100 x time required to print one page.
                                                                                             \[ = \dfrac{{100}}{x}\]

Therefore, the correct answer is option (C), $\dfrac{100}{x}$

Note:
Another approach for solving this question is:
Directly we can find the time take to print 100-page document
The laser printer can print x pages in one minutes.
So, the time required to print 100-pages document \[ = \dfrac{{100}}{x}\]minutes.