1 bead costs $8.
For every 10 beads bought, a discount of $4 is given.
- How much do 10 beads cost?
- How much do 14 beads cost?
- How much do 36 beads cost?
(a)
Cost of every 10 beads
= 10 x 8 - 4
= 80 - 4
= $76
(b)
Number of beads that do not belong to a set
= 14 ÷ 10
= 1 r 4
Cost of the 4 extra beads
= 4 x 8
= $32
Cost of 14 beads
= 76 + 32
= $108
(c)
Number of sets of 10 beads
= 36 ÷ 10
= 3 r 6
Cost of 30 beads
= 3 x 76
= $228
Cost of 6 beads
= 6 x 8
= $48
Cost of 36 beads
= 228 + 48
= $276
Answer(s): (a) $76; (b) $108; (c) $276