Answer:
90 and 30 liters
Step-by-step explanation:
1) if solution of 20% is 'x' and of 60% is 'y' liters, then
2) the pure chlorine is: for solution of 20% - 0.2x, for solution of 60% - 0.6y and
3) the mix of the two solutions is 120=x+y.
4) using these items it is possible to make up the system of two equations:

5) finally, x=90 liters of 20%; y=30 liters of 60% solution.
20mps. Because velocity is the speed per unit. In this case it is going 20 m per second
Answer:
a
Step-by-step explanation:
all you do is divied the top then you take from
Answer:
x= 45
Step-by-step explanation:
90-45=x