One bead costs $
y. One stapler costs $(
y + 15). One story book costs $4
y.
- Paul bought 2 beads, 3 staplers and 1 story book. How much did he spend? Simplify your answer in terms of y.
- If y = 8, how much did Paul spend altogether?
(a)
Cost of 2 beads = 2 x
y = $2
y Cost of 3 staplers = 3 x (
y + 15) = $(3
y + 45)
Cost of 1 story book = $4
y Total amount that he spent
= 2
y + 3
y + 45 + 4
y= 2
y + 3
y + 4
y + 45
= $(9
y + 45)
(b)
If
y = 8,
total amount that he spent
= 9
y + 45
= (9 x 8) + 45
= 72 + 45
= $117
Answer(s): (a) $(9
y + 45) or $(45 + 9
y); (b) $117