Pls.. help me solve this equation 17 + 97a + 95b + 98c +90d = X Given these condition : 25% <= a <= 35% 12% <= b <= 31% 12% <= c <= 31% 12% <= d <= 31% a+b+c+d = 80% Question : What's the combination of a,b,c,d that will maximize X ? Gan cara nyelesaiin ini tanpa tr