if ralph read 1/8 of a book how much more does he have to read

Question

IF RALPH READ 1/8 OF A BOOK HOW MUCH MORE DOES HE HAVE TO READ

Answer 1

So we have 1 - ¹/₈. That is, one whole book, and 1/8 has already been read. What you need to do is convert that whole number into a fraction in order to have the same denominator:

1 * ⁸/₈ = ⁸/₈

 

Now that it's converted, we can subtract:

⁸/₈ - ¹/₈ = ⁷/₈

 

So Ralph has ⁷/₈ of the book left to read.