Asked by Anonymous
Sergei had $75 when he arrived at the mall. He spent $9 at the food court. Then he bought 3 posters that each cost the same amount. Sergei has $27 left. Write and solve an equation to find the cost of one poster.
A. $9
B. $3
C. $13
D. $7
A. $9
B. $3
C. $13
D. $7
Answers
Answered by
Bosnian
x = cost of one poster
75 - 9 - 3 x = 27
66 - 3 x = 27
Subtract 27 to both sides
39 - 3 x = 0
Add 3 x to toth sides
39 = 3 x
x = 39 / 3 = 13
Cost of one poster = $13
75 - 9 - 3 x = 27
66 - 3 x = 27
Subtract 27 to both sides
39 - 3 x = 0
Add 3 x to toth sides
39 = 3 x
x = 39 / 3 = 13
Cost of one poster = $13
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