In what ratio must a 30% acid solution be mixed with a 60% acid solution to obtain a 50% acid solution?
Show answer & explanation
Correct answer: B
Explanation
Given:
First solution = 30% acid
Second solution = 60% acid
Mixture = 50% acid
Formula:
Ratio = (higher percentage − mixture percentage) : (mixture percentage − lower percentage)
= (60 − 50) : (50 − 30)
= 10 : 20
= 1 : 2