Question

PLS HELP ME WITH THIS ALGEBRA!

A salt solution contains 10% salt and weights 80g. How much pure water must be added so that the percentage of salt drops to 4%

Answer 1

• 120 g

Explanation:

A salt solution contains 10% salt and weights 80g.

Salt content of the solution is:

• 80*0.1 = 8 g

4% solution has 8 g salt, total solution is:

• 0.04x = 8
• x = 8/0.04 = 200 g

Water to be added:

• 200 - 80 = 120 g