1 bead costs $3.
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 24 beads cost?
(a)
Cost of every 10 beads
= 10 x 3 - 5
= 30 - 5
= $25
(b)
Number of beads that do not belong to a set
= 14 ÷ 10
= 1 r 4
Cost of the 4 extra beads
= 4 x 3
= $12
Cost of 14 beads
= 25 + 12
= $37
(c)
Number of sets of 10 beads
= 24 ÷ 10
= 2 r 4
Cost of 20 beads
= 2 x 25
= $50
Cost of 4 beads
= 4 x 3
= $12
Cost of 24 beads
= 50 + 12
= $62
Answer(s): (a) $25; (b) $37; (c) $62