has read ​% of a book. He has more pages to finish. How many pages are there in the​ book?

Answer 1

He's read P% of the book. for example let P = 25%

then total pages of the book = B =pages read/P = pages read x 1/.25 =

pages read x 4

B=4(pages read)

or another example, if P=90%

then B=pages read/.9 = (10/9)(pages read)

B= (10/9)PR

B = PR/P = total book pages = number of pages read divided by % of pages read