Textbook U has 86 fewer pages than Textbook V, and Textbook W has 31 more pages than Textbook V. If Textbook U and Textbook V have a total of 168 pages,
- how many pages does Textbook V have?
- how many pages does Textbook W have?
(a)
Number of pages that Textbook U has = 1 u
Number of pages that Textbook V has = 1 u + 86
Number of pages that Textbook W has = 1 u + 86 + 31
Total number of pages that Textbook U and Textbook V have
= 1 u + 1 u + 86
= 2 u + 86
2 u + 86 = 168
2 u = 168 - 86
2 u = 82
1 u = 82 ÷ 2 = 41
Number of pages that Textbook V has
= 1 u + 86
= 41 + 86
= 127
(b)
Number of pages that Textbook W has
= 1 u + 86 + 31
= 127 + 31
= 158
Answer(s): (a) 127; (b) 158
