1 sticker costs $8.
For every 10 stickers bought, a discount of $6 is given.
- How much do 10 stickers cost?
- How much do 16 stickers cost?
- How much do 32 stickers cost?
(a)
Cost of every 10 stickers
= 10 x 8 - 6
= 80 - 6
= $74
(b)
Number of stickers that do not belong to a set
= 16 ÷ 10
= 1 r 6
Cost of the 6 extra stickers
= 6 x 8
= $48
Cost of 16 stickers
= 74 + 48
= $122
(c)
Number of sets of 10 stickers
= 32 ÷ 10
= 3 r 2
Cost of 30 stickers
= 3 x 74
= $222
Cost of 2 stickers
= 2 x 8
= $16
Cost of 32 stickers
= 222 + 16
= $238
Answer(s): (a) $74; (b) $122; (c) $238