Kathy has 8 buttons fewer than Pamela but 35 buttons more than Luis. The three children have 192 buttons altogether.
- How many buttons does Luis have?
- How many buttons does Pamela have?
(a)
Number of buttons Pamela has = 1 u
Number of buttons Kathy has = 1 u - 8
Number of buttons Luis has = 1 u - 8 - 35 = 1 u - 43
Total number of buttons
= 1 u + 1 u - 8 + 1 u - 43
= 3 u - 51
3 u - 51 = 192
3 u = 192 + 51
3 u = 243
1 u = 243 ÷ 3 = 81
Number of buttons that Luis has
= 1 u - 43
= 81 - 43
= 38
(b)
Number of buttons that Pamela has
= 1 u
= 81
Answer(s): (a) 38; (b) 81
