1 bead costs $6.
For every 10 beads bought, a discount of $6 is given.
- How much do 10 beads cost?
- How much do 14 beads cost?
- How much do 32 beads cost?
(a)
Cost of every 10 beads
= 10 x 6 - 6
= 60 - 6
= $54
(b)
Number of beads that do not belong to a set
= 14 ÷ 10
= 1 r 4
Cost of the 4 extra beads
= 4 x 6
= $24
Cost of 14 beads
= 54 + 24
= $78
(c)
Number of sets of 10 beads
= 32 ÷ 10
= 3 r 2
Cost of 30 beads
= 3 x 54
= $162
Cost of 2 beads
= 2 x 6
= $12
Cost of 32 beads
= 162 + 12
= $174
Answer(s): (a) $54; (b) $78; (c) $174