Story book H has 50 fewer pages than Story book J, and Story book K has 25 more pages than Story book J. If Story book H and Story book J have a total of 130 pages,
- how many pages does Story book J have?
- how many pages does Story book K have?
(a)
Number of pages that Story book H has = 1 u
Number of pages that Story book J has = 1 u + 50
Number of pages that Story book K has = 1 u + 50 + 25
Total number of pages that Story book H and Story book J have
= 1 u + 1 u + 50
= 2 u + 50
2 u + 50 = 130
2 u = 130 - 50
2 u = 80
1 u = 80 ÷ 2 = 40
Number of pages that Story book J has
= 1 u + 50
= 40 + 50
= 90
(b)
Number of pages that Story book K has
= 1 u + 50 + 25
= 90 + 25
= 115
Answer(s): (a) 90; (b) 115
