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If a : b : c = 3 : 4 : 7, then the ratio (a + b + c) is equal to ______?

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If a : b : c = 3 : 4 : 7, then the ratio (a + b + c) is equal to ______? Answer: 14 : 3

To find the ratio of sums of pairs, express a,b,c in terms of a common multiplier and then compute each sum. The resulting ratio is 7:11:10.

Question context

This question is part of 📏 Arithmetic Aptitude within the broader 🧠 Aptitude Mastery subject and appears in the ASF Airports Security Force preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.