Story book W has 67 fewer pages than Story book X, and Story book Y has 31 more pages than Story book X. If Story book W and Story book X have a total of 199 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 + 67
Number of pages that Story book Y has = 1 u + 67 + 31
Total number of pages that Story book W and Story book X have
= 1 u + 1 u + 67
= 2 u + 67
2 u + 67 = 199
2 u = 199 - 67
2 u = 132
1 u = 132 ÷ 2 = 66
Number of pages that Story book X has
= 1 u + 67
= 66 + 67
= 133
(b)
Number of pages that Story book Y has
= 1 u + 67 + 31
= 133 + 31
= 164
Answer(s): (a) 133; (b) 164