A’s capital equals twice B’s, and B’s capital equals three times C’s. What is the ratio of capitals A : B : C?

Difficulty: Easy

Correct Answer: 6 : 3 : 1

Explanation:

Introduction / Context: Converting nested relations into a single three-term ratio is a standard step in partnership and ratio problems. We align all terms to a common base (here, C) to obtain A : B : C directly.

Given Data / Assumptions:

  • A = 2B.
  • B = 3C.

Concept / Approach: Substitute B = 3C into A = 2B to express all three in terms of C, then read off the ratio.

Step-by-Step Solution: B = 3C. A = 2B = 2 * 3C = 6C. Therefore, A : B : C = 6C : 3C : C = 6 : 3 : 1.

Verification / Alternative check: The ratio satisfies the original statements: A = 2B (6 : 3) and B = 3C (3 : 1).

Why Other Options Are Wrong: 2 : 1 : 3 scrambles the order. 1 : 2 : 6 is inverted. 1 : 3 : 6 swaps positions and does not meet A = 2B.

Common Pitfalls: Mixing the directions (e.g., thinking B = 2A) or failing to keep a consistent base when forming the combined ratio.

Final Answer: 6 : 3 : 1

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