A pair of pants costs twice as much as a shirt. The total cost of 1

1
pair of pants and 1
1
shirt is $18
$18
. If s represents the cost of 1
1
shirt, which equation could you use to find the cost of 1
1
shirt?

well,

p = 2s
p + s = 18

Now pick the equation which reflects those facts.

p=2s

We can set up the equation as follows:

1 pair of pants + 1 shirt = $18

Since the pair of pants costs twice as much as the shirt, we can represent the cost of the pants as 2s. Therefore, the equation becomes:

2s + s = $18

Combining like terms, we get:

3s = $18

So, the equation to find the cost of 1 shirt (s) would be:

3s = $18

To solve this problem, let's break down the information given.

1. The pair of pants costs twice as much as a shirt.
2. The total cost of 1 pair of pants and 1 shirt is $18.

Let's assume that the cost of 1 shirt is represented by the variable "s".

From the first piece of information, we know that the cost of the pair of pants is twice the cost of 1 shirt. This can be expressed as:

Cost of pair of pants = 2 * Cost of 1 shirt

From the second piece of information, we know that the total cost of 1 pair of pants and 1 shirt is $18. This can be expressed as:

Cost of pair of pants + Cost of 1 shirt = $18

Substituting the first equation into the second equation, we get:

2 * Cost of 1 shirt + Cost of 1 shirt = $18

Combining like terms, we have:

3 * Cost of 1 shirt = $18

To find the cost of 1 shirt, we can solve this equation by dividing both sides by 3:

Cost of 1 shirt = $18 / 3

Simplifying:

Cost of 1 shirt = $6

Therefore, the equation that could be used to find the cost of 1 shirt is:

3s = 18