SOLUTION: How many liters of pure baking soda must be added to 200 liters of a 30% baking soda solution to get a 60% baking soda solution?

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Question 359650: How many liters of pure baking soda must be added to 200 liters of a 30% baking soda solution to get a 60% baking soda solution?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,

How many liters of pure baking soda must be added to get a 60% baking soda solution

Let x be the number of liters of pure baking soda to be added

.30*100L  + 1.00*x = .60(100L + x)

.30*100L  + 1.00*x = .60*100L + .60x

simplify and solve

x - .60x = .60*100L  - .30*100L

.4x = .30*100L

x = 75L

checking our answer

30L + 75L = .60*175L = 105L