Respuesta :
There are 520'pages in the whole book because if you divide 390 by 3 you get 130 and if you multiply that by 4 you get 520, hope this helps! Please give brainiest answer and say thanks.
As per linear equation, there are 520 pages in the entire book.
What is a linear equation?
A linear equation is an equation that contains one or multiple variables with the highest power of the variable is 1.
Given, Tanya has read 3/4 of a book.
She read 390 pages of the book.
Let, the entire book has 'x' pages.
Therefore, 3x/4 = 390
⇒ x = 390 × 4/3
⇒ x = 520
Therefore, the entire book has 520 pages.
Learn more about linear equation here: https://brainly.com/question/19595705
#SPJ3