80 * 40%+ 100 * 60% = 92, with the highest score of 92.
2.17+6 * 3 = 35, 3 wins and 3 draws.
The first two questions are the same.
3( 1)a+a75 % x & lt； (2+x)a%80
a+a % 75x & lt； 2a%80+ax%80
1+% 75x & lt； 2%80+x%80
0.05 times & gt0.6
x & gt 12
(2)(a+a75 % x)-(2+x)a % 80 = 1/32a
1+0.75 x- 1.6-0.8x = 1/32
0.05 x = 0.6- 1/32 = 14/64-2/64 = 12/64 = 3/ 16
x=52