Question 1062129
So call the fraction of the book read on Monday, {{{X}}}, and the total number of pages, {{{P}}},
{{{X*P+(1/8)P+(1/4)P=P}}}
{{{X+1/8+1/4=1}}}
{{{X=1-2/8-1/8}}}
{{{X=5/8}}}
So 5/8ths of the book is equal to 30 pages,
{{{(5/8)P=30}}}
{{{P=30(8/5)}}}
{{{P=48}}}