Solve.
-Two pages that face each other in a book have 349 as the sum of their page numbers. What is the number of the page that comes first?
A)173
B)172
C)174
D)175

Question

Quizplus · Accepted Answer

Let x be the first page number. Then, the second page number is (x+1). We know that x + (x+1) = 349. Simplifying this equation gives 2x + 1 = 349, which means 2x = 348 and x = 174. Therefore, the first page number is 174, and the answer is choice C. Let x be the page number of the first page. Then the second page number is (x+1). We know that their sum is 349:
x + (x+1) = 349
2x + 1 = 349
2x = 348
x = 174
Therefore, the number of the page that comes first is 174.

Solve. -Two Pages That Face Each Other in a Book Have