1 sticker costs $8.
For every 10 stickers bought, a discount of $6 is given.
- How much do 10 stickers cost?
- How much do 17 stickers cost?
- How much do 37 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
= 17 ÷ 10
= 1 r 7
Cost of the 7 extra stickers
= 7 x 8
= $56
Cost of 17 stickers
= 74 + 56
= $130
(c)
Number of sets of 10 stickers
= 37 ÷ 10
= 3 r 7
Cost of 30 stickers
= 3 x 74
= $222
Cost of 7 stickers
= 7 x 8
= $56
Cost of 37 stickers
= 222 + 56
= $278
Answer(s): (a) $74; (b) $130; (c) $278