One sticker costs $
a. One notebook costs $(
a + 15). One colouring book costs $3
a.
- Cole bought 5 stickers, 3 notebooks and 1 colouring book. How much did he spend? Simplify your answer in terms of a.
- If a = 19, how much did Cole spend altogether?
(a)
Cost of 5 stickers = 5 x
a = $5
a Cost of 3 notebooks = 3 x (
a + 15) = $(3
a + 45)
Cost of 1 colouring book = $3
a Total amount that he spent
= 5
a + 3
a + 45 + 3
a= 5
a + 3
a + 3
a + 45
= $(11
a + 45)
(b)
If
a = 19,
total amount that he spent
= 11
a + 45
= (11 x 19) + 45
= 209 + 45
= $254
Answer(s): (a) $(11
a + 45) or $(45 + 11
a); (b) $254