Xavier has twice as many beads as Andy. Andy has 8 more beads than Bobby. They have a total of 104 beads.
- How many beads does Xavier have?
- How many beads does Bobby have?
(a)
Number of beads that Andy has = 1 u
Number of beads that Bobby has = 1 u - 8
Number of beads that Xavier has = 2 u
Total number of beads
= 1 u + 1 u - 8 + 2 u
= 4 u - 8
4 u - 8 = 104
4 u = 104 + 8
4 u = 112
1 u = 112 ÷ 4 = 28
Number of beads that Xavier has
= 2 u
= 2 x 28
= 56
(b)
Number of beads that Bobby has
= 1 u - 8
= 28 - 8
= 20
Answer(s): (a) 56; (b) 20
