1 bead costs $6.
For every 10 beads bought, a discount of $4 is given.
- How much do 10 beads cost?
- How much do 16 beads cost?
- How much do 26 beads cost?
(a)
Cost of every 10 beads
= 10 x 6 - 4
= 60 - 4
= $56
(b)
Number of beads that do not belong to a set
= 16 ÷ 10
= 1 r 6
Cost of the 6 extra beads
= 6 x 6
= $36
Cost of 16 beads
= 56 + 36
= $92
(c)
Number of sets of 10 beads
= 26 ÷ 10
= 2 r 6
Cost of 20 beads
= 2 x 56
= $112
Cost of 6 beads
= 6 x 6
= $36
Cost of 26 beads
= 112 + 36
= $148
Answer(s): (a) $56; (b) $92; (c) $148