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If a:b=12:13 and b:c=8:9, then a:c equals?
  1. 32:35
  2. 32:37
  3. 32:39
  4. None of these
Explanation

To get a:c, multiply the two ratios together so the b cancels out.

a:c = (a/b) × (b/c) = 12/13 × 8/9 = 96/117.

96 and 117 can both be divided by 3, which gives 32/39.

So a:c = 32:39.


Last verified on 25-05-2026

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