Question

Find the cost of one jar of sauce in which your friend a box of spaghetti for $\backslash (1.59$ and$2$jars of spaghetti sauce. The total cost was $\backslash )6.49$.

Short answer

The cost of one jar of sauce is$\$2.45$.

Step-by-step solution

Step 1. Apply the concept of Linear equation

In this type of question, apply the concept of basic linear equation and then doing mathematical operations.

Step 2. Finding the equation for the question 

Since, the cost of spaghetti box is $\$1.59$and the number of spaghetti box bought is$2$and the total cost was$\$4.49$.

Let the cost of one jar of sauce be$\$x$.

Then, the equation should be of the form, Total Cost = Cost of one Spaghetti + 2 (Cost of one Spaghetti sauce)

Now, put the value of all terms in the above equation,

$\begin{array}{l}6.49=1.5+2\cdot x\\ 6.49=1.5+2x\end{array}$

Step 3. Solving the equation of the expression

Since, the expression is $6.49=1.5+2x$

Simply subtract $1.5$to both side of the expression,

$\begin{array}{l}6.49=1.5+2x\\ 6.49-1.5=1.5+2x-1.5\\ 4.9=2x\\ x=\frac{4.9}{2}\\ x=2.45\end{array}$