1 sticker costs $6.
For every 10 stickers bought, a discount of $3 is given.
- How much do 10 stickers cost?
- How much do 12 stickers cost?
- How much do 32 stickers cost?
(a)
Cost of every 10 stickers
= 10 x 6 - 3
= 60 - 3
= $57
(b)
Number of stickers that do not belong to a set
= 12 ÷ 10
= 1 r 2
Cost of the 2 extra stickers
= 2 x 6
= $12
Cost of 12 stickers
= 57 + 12
= $69
(c)
Number of sets of 10 stickers
= 32 ÷ 10
= 3 r 2
Cost of 30 stickers
= 3 x 57
= $171
Cost of 2 stickers
= 2 x 6
= $12
Cost of 32 stickers
= 171 + 12
= $183
Answer(s): (a) $57; (b) $69; (c) $183