The answer is acidic.
pH < 7 = acidic
pH > 7 base
Solution B (17% alcohol) = x ml
Solution A (13% alcohol) = (x-100) ml
0.17x ml alcohol in Solution B
0.13(x-100) ml alcohol in Solution A
0.17x + 0.13(x-100) = 347
0.17x+0.13x-13=347
0.3x = 360
x=360/0.3=3600/3=1200 ml solution B
There's nothing following?