Problem

A company makes 3 types of cable. Cable A requires 3 black, 3 white, and 2 red wires. $B$ requires 1 black, 2 white, and 1 red. $C$ requires 2 black, 1 white, and 2 red. The company used 95 black, 100 white and 90 red wires. How many of each type of cable were made? A. $5 \mathrm{~A} ; 18 \mathrm{~B} ; 25 \mathrm{C}$ B. $30 \mathrm{~A} ; 5 \mathrm{~B} ; 25 \mathrm{C}$ C. $58 \mathrm{~A} ; 30 \mathrm{~B} ; 22 \mathrm{C}$ D. $5 \mathrm{~A} ; 30 \mathrm{~B} ; 25 \mathrm{C}$

Solution

Step 1 :Let's denote the number of cables A, B, and C produced as \(x\), \(y\), and \(z\) respectively. Then we have the following equations based on the number of wires used:

Step 2 :For black wires: \(3x + y + 2z = 95\)

Step 3 :For white wires: \(3x + 2y + z = 100\)

Step 4 :For red wires: \(2x + y + 2z = 90\)

Step 5 :We can solve this system of equations to find the values of \(x\), \(y\), and \(z\).

Step 6 :The solution to the system of equations is \(x = 5\), \(y = 30\), and \(z = 25\).

Step 7 :Final Answer: The company made \(\boxed{5}\) type A cables, \(\boxed{30}\) type B cables, and \(\boxed{25}\) type C cables.

From Solvely APP
Source: https://solvelyapp.com/problems/20322/

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