Answer
75ml
Work Step by Step
The amount of pure acid is x
Amount of 50% sol.+amount of 100% sol.(pure acid) = amount of 60%sol.
1x represents 100% times amount x, 300+x is the final amount of 60% solution
0.5(300)+1x=0.6(300+x)
150+x=180+0.6x
0.4x=30
x=75
