Create 150 mL of a 7% by volume solution using the colored water as a solute and plain water as your solvent. values and calculations
total volume of solution: ?
volume of colored water you will use: ?
volume of plain water you will use: ?

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

it is b that is the answer.