One stamp costs $
y. One marker costs $(
y + 15). One story book costs $3
y.
- Fabian bought 5 stamps, 3 markers and 1 story book. How much did he spend? Simplify your answer in terms of y.
- If y = 20, how much did Fabian spend altogether?
(a)
Cost of 5 stamps = 5 x
y = $5
y Cost of 3 markers = 3 x (
y + 15) = $(3
y + 45)
Cost of 1 story book = $3
y Total amount that he spent
= 5
y + 3
y + 45 + 3
y= 5
y + 3
y + 3
y + 45
= $(11
y + 45)
(b)
If
y = 20,
total amount that he spent
= 11
y + 45
= (11 x 20) + 45
= 220 + 45
= $265
Answer(s): (a) $(11
y + 45) or $(45 + 11
y); (b) $265