Answer:
t(ties) = $8,50 and s(shirts) = $19,50
Linda's purchase total price $36,50
Step-by-step explanation:
In mathematics, a <em>system of linear equations</em> is a set of two or more linear equations with more than one unknown that make up a mathematical problem that consists of finding the values of the unknowns that satisfy those operations. the unknowns are usually represented with letters of the alphabet
For this example, we can represent as a system of linear equations as follows:
For Ted
where s are shirts, t are ties, and 95 the total price of both products in $.
For Stephen
where s are shirts, t are ties, and 84 the total price of both products in $.
Each shirt and each tie were buying in the same clothing store which means that it has the same price and we can and we can relate both equations with a system of equations as follows:
Using the <em>reduction method</em>, which is to clear in one of the equations with any unknown.
In this case the system has two unknowns, the selected one must be replaced by its equivalent value in the other equation.
Let's clear s in the second equation
Substituting the value of in the first equation
with
We got that the price of a tie is t = $8,50
Substituting the value of t in the first equation in order to obtain the value of s
We got that the price of a shirt is s = $19,50
Checking if the result satisfies the equations
With t = 8.50 and s = 19.50
Linda bought 1 shirt and 2 ties at the same store. What's the total price in dollars and cents of Linda's purchase?
If a shirt value is s = $19,50 and a tie value is t = $8,50
Then s + 2t = ?
$19,50 + 2($8,50) = $36,50