A saline solution is diluted with water in the ratio 1:24. This solution is then taken and mixed with water in the ratio 1:3. How much of the original saline solution would there be in 200mL of this final solution?

Guest Mar 30, 2021

#1**+2 **

1:24 means there is 1 out of (1+24 =25) or 1/25 saline in the first dilution

then mix this 1/25 in a ratio of 1:3 meaning 1/4 of 1/25 is now saline = 1/100 is saline

1/100th of 200 = 1/100 * 200 = 2 ml saline in 200 ml of the twice diluted mix .

ElectricPavlov Mar 30, 2021

#1**+2 **

Best Answer

1:24 means there is 1 out of (1+24 =25) or 1/25 saline in the first dilution

then mix this 1/25 in a ratio of 1:3 meaning 1/4 of 1/25 is now saline = 1/100 is saline

1/100th of 200 = 1/100 * 200 = 2 ml saline in 200 ml of the twice diluted mix .

ElectricPavlov Mar 30, 2021