(1) If you buy X sets of type A fitness equipment, buy 30-x sets of type B fitness equipment.

Therefore, the required funds for purchase = 25,000x+22,000x (30-x) = 660,000+3,000x.

∫708000≤660000+3000 x≤720000

∴ 16≤x≤20

∴ There are five purchase schemes:

1, 16 sets of type A, 14 sets of type B, and the required capital is 708,000 yuan.

2. Type A 17 sets and Type B 13 sets, and the required funds are 7 1 1000 yuan.

3.A type 18 sets and B type 12 sets, and the required funds are 714,000 yuan.

4. 19 sets of type A, 1 1 set of type B, and the required funds are 7 17000 yuan.

5. 20 sets of type A and type B 10, and the required capital is 720,000 yuan.

(2) It takes X yuan to assemble 1 set of type A fitness equipment, and Y yuan to assemble 1 set of type B fitness equipment.

List the equations according to the meaning of the question:

2x+3y= 1350

3x+y= 1 150

Solution: x=300, y=250.

Assembly cost of scheme1=16× 300+14× 250 = 8300.

The required assembly cost of scheme 2 =17× 300+13× 250 = 8350.

The assembly cost required for Scheme 3 =18× 300+12× 250 = 8400.

The required assembly cost of Scheme 4 =19× 300+1/kloc-0 /× 250 = 8450.

The required assembly cost of Scheme 5 =20×300+ 10×250=8500.

∴ In order to minimize the assembly cost, the procurement scheme of 1 should be adopted.

I hope I can help ~ ~