Question

a book has 70pages with 30 lines of printed matters in each page.if each page is to have only 20 lines of printed matter, how many pages will be book have?

Answer 1

Hi friend!

$<marquee direction="right" behavior="alternate"><big><big><b>Answer:</b></big></big></marquee>$

A question based on: Direct and Inverse Proportions.

In both the cases, the book must have the same number of lines. To find out the number of pages in the book if each page is to have only 20 pages, we use the following method:

Number of pages in the new setup = $x$

70 × 30 = 20 × $x$
2100 = 20$x$
$x = 2100 \div 20 \\ x = 105$

$<p style="border:3px; border-color:#4400FF; border-style:dotted;"><p style="border:2px; border-style:solid; border-color:#FF8888; padding:0.5em;"> <b>Number of pages in the new setup = <font color=#0000FF><big> 105</big></font>.</b></p></p>$

Hope you found my answer helpful. Keep Smiling!