A mixture of two liquids has the ratio 3 : 5. How many ml of the first liquid are in 240 ml of the mixture?
Answer and explanation
Correct answer: A. 90 ml
- Step 1: The ratio has 3 + 5 = 8 parts. Step 2. First liquid = 3/8 x 240 = 90 ml. Answer: 90 ml. Why not the others: 150 ml: the share of the second liquid was calculated. 80 ml: the total was divided by one ratio number. 144 ml: the ratio of the parts was used instead of the share of the total.
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