Cindy has 14 stamps fewer than Betty but 20 stamps more than George. The three children have 225 stamps altogether.
- How many stamps does George have?
- How many stamps does Betty have?
(a)
Number of stamps Betty has = 1 u
Number of stamps Cindy has = 1 u - 14
Number of stamps George has = 1 u - 14 - 20 = 1 u - 34
Total number of stamps
= 1 u + 1 u - 14 + 1 u - 34
= 3 u - 48
3 u - 48 = 225
3 u = 225 + 48
3 u = 273
1 u = 273 ÷ 3 = 91
Number of stamps that George has
= 1 u - 34
= 91 - 34
= 57
(b)
Number of stamps that Betty has
= 1 u
= 91
Answer(s): (a) 57; (b) 91
