Bunuel
12 Days of Christmas 2024 - 2025 Competition with $40,000 of PrizesA certain electronics company produces and sells two products: a fitness tracker and a smart ring. Each fitness tracker requires 4 hours of assembly and 6 hours of software calibration, while each smart ring requires 4 hours of assembly and 2 hours of software calibration. The company’s profit on each fitness tracker is $40 and its profit on each smart ring is $30. If the facility the company uses to produce these products has limited weekly capacities for assembly and software calibration, how many fitness trackers should the company produce each week to maximize profit for these two products?
(1) The cost of the components for each fitness tracker is twice that for each smart ring.
(2) The facility has the capacity for 200 hours of assembly time each week and 200 hours of software calibration each week.
Let x = number of fitness trackers produced
Let y = number of smart rings produced
Profit = 40x + 30y
Subject to:
4x + 4y <= 200 (assembly constraint)
6x + 2y <= 200 (calibration constraint)
x >= 0, y >= 0
Statement 1: The cost of components does not affect profit or constraints, so it is irrelevant.
Statement 2: 4x + 4y <= 200 and 6x + 2y <= 200 provide the key constraints.
From the assembly constraint:
4x + 4y = 200 => x + y = 50
From the calibration constraint:
6x + 2y = 200 => 3x + y = 100
Solve these two equations:
x + y = 50
3x + y = 100
Subtract the first from the second:
2x = 50 => x = 25
Substitute x = 25 into x + y = 50:
25 + y = 50 => y = 25
So, x = 25 and y = 25.
Answer: The company should produce 25 fitness trackers.
The correct answer is B.