1/3 book = 1/2 hour
3/3 book = 3/2 hour
Ans: 1 and a half hour to read the entire book.
OR
Let x be the number of pages in the book.
[tex] \frac{1}{3} [/tex]x = [tex] \frac{1}{2} [/tex] hour
[tex] \frac{1}{3} [/tex]x × 3 = [tex] \frac{1}{2} [/tex] × 3
x = [tex] \frac{3}{2} [/tex] hours = 1 and a half hour
