At a shop, Sabrina paid $37 for 1 marble and 4 beads. The marble cost $2 more than each bead.
- How much is 1 bead?
- How much is 1 marble?
(a)
Cost of 1 bead = 1 u
Cost of 4 beads = 4 u
Cost of 1 marble = 1 u + 2
Total cost of 1 marble and 4 beads
= 4 u + 1 u + 2
= 5 u + 2
5 u + 2 = 37
5 u = 37 - 2
5 u = 35
1 u = 35 ÷ 5 = 7
Cost of 1 bead
= 1 u
= $7
(b)
Cost of 1 marble
= 1 u + 2
= 7 + 2
= $9
Answer(s): (a) $7; (b) $9