One coin costs $
x. One marker costs $(
x + 15). One story book costs $3
x.
- Perry bought 5 coins, 3 markers and 1 story book. How much did he spend? Simplify your answer in terms of x.
- If x = 13, how much did Perry spend altogether?
(a)
Cost of 5 coins = 5 x
x = $5
x Cost of 3 markers = 3 x (
x + 15) = $(3
x + 45)
Cost of 1 story book = $3
x Total amount that he spent
= 5
x + 3
x + 45 + 3
x= 5
x + 3
x + 3
x + 45
= $(11
x + 45)
(b)
If
x = 13,
total amount that he spent
= 11
x + 45
= (11 x 13) + 45
= 143 + 45
= $188
Answer(s): (a) $(11
x + 45) or $(45 + 11
x); (b) $188