Answer:
12 g of water she use.
Explanation:
Given : Jen wants to make 60% salt solution using 18g of salt.
To find : How much water should she use.
Solution : Let x be the solution.
So, 60% of x is 18 g.
∴



Which means Total solution is 30 g and 18 g is the salt
So, quantity of water = 30-18 = 12g