5
Answer: DSet 3: Ratios Rates Proportions (Advanced)
Explanation
PROBLEM
A mixture is made of two substances in the ratio 2:3. If the total mixture is 25 liters, how many liters is the first substance?
A mixture is made of two substances in the ratio 2:3. If the total mixture is 25 liters, how many liters is the first substance?
A.
12
B.
13
C.
5
D.✓ Correct
10
Detailed Explanation
Choice D is the best answer. First substance = 2/(2+3) times 25 = 2/5 times 25 = 10 liters
Why others are wrong:
A: 12 is incorrect because it does not satisfy the equation.
B: 13 is incorrect because it does not satisfy the equation.
C: 5 is incorrect because it does not satisfy the equation.