Question

After reading 2/3 of a book 20 pages are left.
How many pages are their in a book?

Answer 1

Answer:

There was 60 pages.

Step-by-step explanation:

Let the total number of pages be n.

$total \: page \: read =n \times \frac{2}{3} \\ total \: pages \:\: = (n \times \frac{2}{3} ) + 20 \\ = > n= \frac{2n}{3} + 20 \\ = > n = \frac{2n + 60}{3} \\ \\ = > 3n = 2n + 60 \\ = > 3n - 2n = 60 \\ = > n = 60$

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Answer 2

Answer:

total pages read = x X 2/3

=(x X 2/3)

=x=2x/3+20

=x=2x+60/3

3x=2x+60

=3x-2x=60

x=60