To form equations from word problems, we can derive mathematical operations as well as variables from the given information.
In this case, each time Walker reads a certain number of pages, we subtract that from the total number of pages left to know how many pages is left to read.
<h2>Solving the Question</h2>
<em>Let r represent the pages left to read.</em>
<em />
792 pages in total
⇒ <em>r</em> = 792
Walker reads 15 pages a day during the week and 25 pages a day during the weekend.
There are 5 weekdays, and he reads 15 pages each of those days. ⇒ <em>r</em> = 792 - 5×15
There are 2 weekend days, and he reads 25 pages each of those days. ⇒ <em>r</em> = 792 - (5×15 + 2×25)
5 weeks have passed
Multiply the terms representing the number of pages he reads a week by 5, for 5 weeks. ⇒ <em>r</em> = 792 - (5×15 + 2×25)×5
