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