Question

A pair of pants costs twice as much as a shirt. The total cost of 1 pair of pants and 1 shirt is $18 . If s represents the cost of 1 shirt, which equation could you use to find the cost of 1 shirt?

Answer 1

Let the price of 1 shirt be represented by = s

A pair of pants costs twice as much as a shirt, then the cost of pants is = 2s

The total cost of 1 pair of pants and 1 shirt is $18 , means :
`s+2s=18`

Solving this we get,

`3s=18`

`s=6`

So, the price of 1 shirt is $6 and price of 1 pair of pants is = 2s = 2*6 = $12.

Answer 2

s + 2s = 18, will be the equation.

Explanation:

Let 's' represents the cost of 1 shirt.

As per given statement in the question "a pair of pants costs twice as much as a shirt".

The cost of a pair of pants = $2s

The total cost of 1 pair of pants and 1 shirt = $18

so the equation to find the cost of 1 shirt will be

s + 2s = 18

3s = 18

`(3s)/(3)=(18)/(3)`

s = $6