Book

Alena read a book at a speed of 15 pages per day. If she read twice as fast, she should read a book four days earlier. How many pages have a book?

Final Answer:

n =  120

Step-by-step explanation:

15 x = n 30 (x4) = n  30(n/154)=n  30 (n/154)=n  15n=1800  n=151800=120  n=120   Verifying Solution:  x=n/15=120/15=8



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