Story book K has 22 fewer pages than Story book L, and Story book M has 15 more pages than Story book L. If Story book K and Story book L have a total of 156 pages,
- how many pages does Story book L have?
- how many pages does Story book M have?
(a)
Number of pages that Story book K has = 1 u
Number of pages that Story book L has = 1 u + 22
Number of pages that Story book M has = 1 u + 22 + 15
Total number of pages that Story book K and Story book L have
= 1 u + 1 u + 22
= 2 u + 22
2 u + 22 = 156
2 u = 156 - 22
2 u = 134
1 u = 134 ÷ 2 = 67
Number of pages that Story book L has
= 1 u + 22
= 67 + 22
= 89
(b)
Number of pages that Story book M has
= 1 u + 22 + 15
= 89 + 15
= 104
Answer(s): (a) 89; (b) 104