Guide book P has 37 fewer pages than Guide book Q, and Guide book R has 39 more pages than Guide book Q. If Guide book P and Guide book Q have a total of 193 pages,
- how many pages does Guide book Q have?
- how many pages does Guide book R have?
(a)
Number of pages that Guide book P has = 1 u
Number of pages that Guide book Q has = 1 u + 37
Number of pages that Guide book R has = 1 u + 37 + 39
Total number of pages that Guide book P and Guide book Q have
= 1 u + 1 u + 37
= 2 u + 37
2 u + 37 = 193
2 u = 193 - 37
2 u = 156
1 u = 156 ÷ 2 = 78
Number of pages that Guide book Q has
= 1 u + 37
= 78 + 37
= 115
(b)
Number of pages that Guide book R has
= 1 u + 37 + 39
= 115 + 39
= 154
Answer(s): (a) 115; (b) 154
