Question

If 10 printers can print 50 pages in a second, then find the number of pages printed by 2 such printers in a second.

• A. 6 pages
• B. 8 pages
• C. 10 pages
• D. 12 pages

Answer 1

The correct option is C 10 pages

The number of pages (P) printed in a second is directly proportional to the number of printers (N) used.

$\Rightarrow P\propto N$

Let the constant of variation be k.
$\Rightarrow P=kN$

Given, when P = 50, N = 10.
So, $k=\frac{P}{N}=\frac{50}{10}=5.$

Hence, the number pages (P) printed in a second by 2 such printers = kN = (5)(2) = 10 pages.