One bead costs $
i. One pencil costs $(
i + 15). One colouring book costs $5
i.
- Tim bought 6 beads, 3 pencils and 1 colouring book. How much did he spend? Simplify your answer in terms of i.
- If i = 18, how much did Tim spend altogether?
(a)
Cost of 6 beads = 6 x
i = $6
i Cost of 3 pencils = 3 x (
i + 15) = $(3
i + 45)
Cost of 1 colouring book = $5
i Total amount that he spent
= 6
i + 3
i + 45 + 5
i= 6
i + 3
i + 5
i + 45
= $(14
i + 45)
(b)
If
i = 18,
total amount that he spent
= 14
i + 45
= (14 x 18) + 45
= 252 + 45
= $297
Answer(s): (a) $(14
i + 45) or $(45 + 14
i); (b) $297