Chapter 7.7, Problem 5P

To determine

To Find: The cost per pound of the mixture.

Answer to Problem 5P

  $\$1$

Explanation of Solution

Given:

  $\begin{array}{l}\text{Quantity of Egg in noodles: }5lb\\ \text{Cost of Egg in noodles: \$}80/lb\\ \text{Quantity of Spinach in noodles: }2lb\\ \text{Cost of Spinach in noodles: }\$1.50/lb\end{array}$

Formula Used:

  $\text{Number of lb }\times \text{ cost per lb = Total Cost}$

Calculation:

  $\begin{array}{l}\text{Egg: 5}\times \text{0}\text{.80=4}\\ \text{Spinach: 2}\times \text{1}\text{.50=3}\\ \text{Mixture: }7x\\ \Rightarrow 4+3=7x\\ \Rightarrow x=1\end{array}$

	Number lb X	Cost per lb	= Total Cost
Egg Noodles	5	0.8	4
Spinach Noodles	2	1.5	3
Mixture	7	1	7

Conclusion:

Thus the cost per pound is $\$1$