1 bead costs $6.
For every 10 beads bought, a discount of $5 is given.
- How much do 10 beads cost?
- How much do 14 beads cost?
- How much do 35 beads cost?
(a)
Cost of every 10 beads
= 10 x 6 - 5
= 60 - 5
= $55
(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
= 55 + 24
= $79
(c)
Number of sets of 10 beads
= 35 ÷ 10
= 3 r 5
Cost of 30 beads
= 3 x 55
= $165
Cost of 5 beads
= 5 x 6
= $30
Cost of 35 beads
= 165 + 30
= $195
Answer(s): (a) $55; (b) $79; (c) $195