Answer:
171 pages
Explanation:
First we should find out how much is 1/8 of 456
456 / 8 = 57
Now that we know how much 1/8 of 456 is, we can multiply 57 by 3 so we can find out how many pages Peter read of the new novel
57 x 3 = 171
So Peter has read 171 pages of the novel so far
Your welcome, hope this helps!