1, draw water in order from small to large, the minimum time I understand is including everyone's time, so: 6 *1+5 * 2+4 * 3+3 * 4+5 * 2+6 = 56.

2. Each column is: (29+ 1)/2= 15.

The number of people is 15*4-4=56.

3. Let the number of boys be A and the number of girls be B.

Then a/2 * (3+5)+b/2 * (6+2) = 4 * (a+b) = 4 * 54 = 216.

4、 1 10-72+24=62

5、5*9-5*8+ 1=6

6. If nine apples in the first frame are put into the second frame, the number of two crazy apples is equal, which means that the first frame has 18 more apples than the second frame; Let the apple in the first frame be X and the apple in the second frame be x- 18. According to the fact that if 12 apples are taken from the second frame and put into the first frame, the number of apples in the first basket is equal to twice that in the second frame, and x+12x = 72 * (x-12-18) can be obtained.