Story book W has 51 fewer pages than Story book X, and Story book Y has 29 more pages than Story book X. If Story book W and Story book X have a total of 185 pages,
- how many pages does Story book X have?
- how many pages does Story book Y have?
(a)
Number of pages that Story book W has = 1 u
Number of pages that Story book X has = 1 u + 51
Number of pages that Story book Y has = 1 u + 51 + 29
Total number of pages that Story book W and Story book X have
= 1 u + 1 u + 51
= 2 u + 51
2 u + 51 = 185
2 u = 185 - 51
2 u = 134
1 u = 134 ÷ 2 = 67
Number of pages that Story book X has
= 1 u + 51
= 67 + 51
= 118
(b)
Number of pages that Story book Y has
= 1 u + 51 + 29
= 118 + 29
= 147
Answer(s): (a) 118; (b) 147