1.2x+ 1(50-x)≤60
0.8x+ 1.4(50-x)≤43
To solve this set of inequalities, you must
45≤x≤50
Then x can be 45, 46, 47, 48, 49, 50. Therefore, there are six distribution schemes.
Then, let the total cost be y yuan.
y=30x+40(50-x)
That is, y=- 10x+2000.
Because k =- 10 < 0, y decreases with the increase of x.
Therefore, when x=50, the value of y is the largest.
A: Within the permitted range, 50 pieces of product A should be produced to achieve the lowest total cost.