4× (row +8)+5× row =680

4 lines +32 lines +5 lines =680

Line 9 =680-32

Row =72 yuan, basketball price = volleyball price +8 yuan =72+8=80 yuan.

Question 2: Suppose Xiao Qiang has a 5 yuan currency, then 10 RMB (43-a).

There are also 43 5 yuan and 10 yuan, totaling 340 yuan, so:

5×a+ 10×(43-a)=340

5×a+ 10×43- 10×a=340

5×a- 10×a=340-430

5×a=90

a= 18，43-a=43- 18=25

Therefore, Xiao Qiang has 18 5 yuan dollars, so 25 10 yuan.

Question 3: (1) Suppose Xiao Gan made a mistake, a * * *, with 20 questions, then Xiao Gan made a mistake (20-a).

If you do one thing, you get 5 points, if you don't do it, you get 0 points, and if you do something wrong, you get 2 points.

5×(20-a)+(-2)×a=58

5×20+5×(-a)-2a=58

100-7a=58

7a= 100-58

a=42÷7=6

So Xiao Gan made six mistakes, and one * * * had 20 problems, so Xiao Gan made a mistake in 14.