0.9(50-x)+0.4x≤36①= = = & gt; x≥ 18
0.3(50-x)+x≤29②= = = & gt; x≤ 20
A: The range of X is l8≤ x≤20 (x is a positive integer).
x = 18, 19,20
(2) The number of pieces for making type A and type B ceramics is:
① 32 pieces of A-type pottery and 8 pieces of B-type pottery/KLOC-0;
(2) making 3/0/piece of A-type pottery and 0/9/piece of moon-type pottery;
③ Make 30 pieces of A-type pottery and 20 pieces of moon-type pottery.