Complete the equation for the relationship between the number of pages left and number of hours.

Question

Naoya read a book cover to cover in a single session, at a rate of 55 pages per hour. After 4 hours, he had 350 pages left to read.

P=

Answer 1

Find the total number of pages in the book first.

total = 55(4)+350= 570

The number of pages left to read is equivalent to the total number of pages in the book minus the pages read. To find the number of pages read, multiply the reading rate of 55 pages an hour by the number of hours read. Therefore, a complete equation for the number of pages Naoya has left to read at any point is equal to

P= 570-55h