At a shop, Nora paid $43 for 1 stamp and 2 beads. The stamp cost $4 more than each bead.
- How much is 1 bead?
- How much is 1 stamp?
(a)
Cost of 1 bead = 1 u
Cost of 2 beads = 2 u
Cost of 1 stamp = 1 u + 4
Total cost of 1 stamp and 2 beads
= 2 u + 1 u + 4
= 3 u + 4
3 u + 4 = 43
3 u = 43 - 4
3 u = 39
1 u = 39 ÷ 3 = 13
Cost of 1 bead
= 1 u
= $13
(b)
Cost of 1 stamp
= 1 u + 4
= 13 + 4
= $17
Answer(s): (a) $13; (b) $17