A chemist mixes a 20% acid solution with a 50% acid solution to make 30 liters of a 40% acid solution. How many liters of the 50% solution are needed?
- A
15
- B
25
- C
10
- Dcheck_circle
20
Explanation
Let = liters of 50%. → → .
Linear Equations in One Variable
SAT Math· difficulty 3/5
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