1 sticker costs $6.
For every 10 stickers bought, a discount of $4 is given.
- How much do 10 stickers cost?
- How much do 18 stickers cost?
- How much do 26 stickers cost?
(a)
Cost of every 10 stickers
= 10 x 6 - 4
= 60 - 4
= $56
(b)
Number of stickers that do not belong to a set
= 18 ÷ 10
= 1 r 8
Cost of the 8 extra stickers
= 8 x 6
= $48
Cost of 18 stickers
= 56 + 48
= $104
(c)
Number of sets of 10 stickers
= 26 ÷ 10
= 2 r 6
Cost of 20 stickers
= 2 x 56
= $112
Cost of 6 stickers
= 6 x 6
= $36
Cost of 26 stickers
= 112 + 36
= $148
Answer(s): (a) $56; (b) $104; (c) $148