Solution:
Let the volume (in litres) of acids used be:
x1=amount of 25% acid
x2=amount of 40% acid
x3=3*x2=amount of 60% acid
Uhh..not in a mood for a meet, k? Maybe later hun~~
40 is the correct answer. Hope this helps :)
F
Triangle equals 180
42+42=84
What is 180-84
That would be the next angle
