1:2

Do you want a quick refresher on the ratio 1:2, some practice problems, or a worked example with a specific total?

Here’s a quick guide:

• Meaning: For every 1 part of quantity A there are 2 parts of quantity B.
• Composition: Total parts = 1 + 2 = 3 parts.
• Fractions: A = 1/3 of the total, B = 2/3 of the total.
• If you know the total T:
  • A = T/3
  • B = 2T/3

Quick examples:

• If A:B = 1:2 and total is 90 units, A = 90/3 = 30, B = 2×30 = 60.
• If a solution is 1:2 and total volume is 150 ml, A = 50 ml, B = 100 ml.
• If A = 12 (and A:B = 1:2), then B = 24.

Practice problems (quick to check):

1. A:B = 1:2. If A = 7, what is B?
2. A:B = 1:2. If the total is 30, what are A and B?
3. A:B = 1:2. A mixture totals 540 ml. How many ml of A and B?

If you want, tell me the exact problem type (mixtures, recipes, scaling quantities, etc.) or provide a specific total, and I’ll tailor answers or give step-by-step solutions.