Salt

Seawater contains 5% salt. How many kilograms of fresh water must be added to 40 kg of seawater so that the salinity drops to 2%?

Final Answer:

x =  60 kg

Step-by-step explanation:

r1=5%=1005=201=0.05 r2=2%=1002=501=0.02 m=40 kg  m r1=r2 (m+x) 40 0.05=0.02 (40+x)  0.02x=1.2  x=0.021.2=60  x=60=60 kg



Help us improve! If you spot a mistake, please let let us know. Thank you!







Tips for related online calculators
Our percentage calculator will help you quickly and easily solve a variety of common percentage-related problems.
Do you have a linear equation or system of equations and are looking for a solution? Or do you have a quadratic equation?

You need to know the following knowledge to solve this word math problem:

algebrabasic operations and conceptsUnits of physical quantitiesthemes, topicsGrade of the word problem

Related math problems and questions: