Question

guru reads 3 by 5 of a book ,he finds that there are still 80 pages to be read . What is the total number of pages to be read/?​

Answer 1

Answer:

Let the total number of pages be x

If guru reads (3/5x) then (2/5x) is the number of pages that are still left to read.

It is given that 80 pages are still to be read

Hence,x=(2/5x)=80

x=80×5/2=400/2=200pages

Therefore,The Total number of pages is 200.

Answer 2

Information provided with us:

➪ Part of the book read by guru

$\implies \rm\dfrac{3}{5}$

Condition given in question:

➪ Guru finds that there are still 80 pages left to be read .

What we have to calculate༄

➪ The required total number of pages to be read

✰Assumption ༄

• ➪ Consider total number of pages be x

✰Then ༄

➪ Number of pages of the book read by guru

$\implies \rm\dfrac{3 \: x}{5}$

✰ So༄

➪ Part or pages of book left to be read

➡ Total numbers of pages - Number of pages of the book read by guru

$\rm \implies \: x- \dfrac{3 \: x}{5} = \dfrac{2 \: x}{5}$

✰Now ༄

$\rm \implies \: \dfrac{2 \: x}{5} \: of \: book = 80$

✰Calculation ༄

$\rm \implies \: 2 \: x = 80 \times 5$

$\rm \implies \: 2 \: x = 400$

$\rm \implies \: x = \dfrac{400}{2}$

$\longrightarrow\bigstar \: \: \sf\boxed{\bold{\red{x = 200}}}\: \: \: \bigstar$

✰ Henceforth༄

➪ Thus required total number of pages to be read is

$\implies\bigstar \: \: \sf\boxed{\bold{\gray{200}}}\: \: \: \bigstar$