Mathematics

Can someone show me how to do this? What volumes of 60% hydrochloric acid solution and 30% hydrochloric acid solution must be mixed to make 125mL of 36% hydrochloric acid solution?


Answers

dalmayshuns101

4 years ago Comment

u need two equations.x + y = 125
0.60x + 0.30y = (0.36)(125)x + y = 125
0.60x + 0.30y = 45solve for a variable in the first equation
y = 125 - xplug into the second equation
0.60x + 0.30(125 - x) = 45
0.60x + 37.5 - 0.30x= 45
0.30x + 37.5 = 45
0.30x = 7.5
x = 25plug the answer for x into the first equation
25 + y = 125
y = 100