At a shop, Betty paid $35 for 1 marble and 5 beads. The marble cost $5 more than each bead.
- How much is 1 bead?
- How much is 1 marble?
(a)
Cost of 1 bead = 1 u
Cost of 5 beads = 5 u
Cost of 1 marble = 1 u + 5
Total cost of 1 marble and 5 beads
= 5 u + 1 u + 5
= 6 u + 5
6 u + 5 = 35
6 u = 35 - 5
6 u = 30
1 u = 30 ÷ 6 = 5
Cost of 1 bead
= 1 u
= $5
(b)
Cost of 1 marble
= 1 u + 5
= 5 + 5
= $10
Answer(s): (a) $5; (b) $10