Chapter 3, Problem 5CR

To determine

To find:the cost of one jar of sauce.

Answer to Problem 5CR

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

Explanation of Solution

Given information:

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

Calculation:

Let $ $x$ be the cost of on jar of sauce.

  $\text{Total cost}=\text{Cost of one Spaghetti}+2\cdot \text{Cost of one Spaghetti sauce}$

Substitute the values in above equation and solve:

  $\begin{array}{l}\text{6}\text{.49}=\text{1}\text{.59}+2\cdot x\text{ (Substitute)}\\ \text{6}\text{.49}=\text{1}\text{.59}+2x\text{ (Simplify)}\\ \text{6}\text{.49}-\text{1}\text{.59}=\text{1}\text{.59}+2x-1.59\text{ (Add 6 to each sides)}\\ 4.\text{9}=2x\text{ (Simplify)}\\ \frac{4.\text{9}}{2}=\frac{2x}{2}\text{ (Divide both sides by 4) }\\ 2.45=x\text{ (Simplify)}\\ x=2.45\end{array}$

Hence,

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