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.

Question

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

Answer 1

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

Answer 2

Well, it seems like Sergei really loves posters! Now, let's do some math, but don't worry, I won't make it boring!

Sergei had $75 when he arrived at the mall. Then he spent $9 at the food court, leaving him with $66. After buying three posters that each cost the same amount, Sergei had $27 left.

To find the cost of one poster, let's use our funny math skills. We can start by subtracting the $27 remaining from the initial $66 he had after buying the food, which gives us $39.

Since Sergei bought three posters, we can divide the $39 by 3 to find the cost of one poster. Hold your breath... and drumroll, please! The cost of one poster is $13!

So, the answer is C. $13. Sergei must have quite the collection now! Keep the laughter going!

Answer 3

Let's represent the cost of one poster as 'x'.

Sergei had $75 when he arrived at the mall.
After spending $9 at the food court, he had 75 - 9 = $66 left.
He then bought 3 posters, so he spent a total of 3x dollars on posters.
After buying the posters, he had $27 left.

So, the equation for this situation is: 66 - 3x = 27.

Now, we can solve this equation to find the cost of one poster.

66 - 3x = 27
-3x = 27 - 66
-3x = -39
x = -39 / -3
x = 13

Therefore, the cost of one poster is $13. Answer choice C is correct.

Answer 4

To solve the problem and find the cost of one poster, we can set up an equation.

Let's denote the cost of one poster as "x".

Sergei had $75 when he arrived at the mall. He spent $9 at the food court, so he had (75 - 9) = $66 left.

Next, Sergei bought three posters that each cost the same amount, so the total cost of the posters would be 3x.

After buying the posters, Sergei has $27 left.

We can now set up the equation:

66 - 3x = 27

Now, let's solve for x.

First, subtract 66 from both sides of the equation:

-3x = 27 - 66

Simplifying further:

-3x = -39

To isolate x, divide both sides of the equation by -3:

x = (-39) / (-3)

Simplifying the division:

x = 13

Therefore, the cost of one poster is $13.

The correct answer is C. $13.