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Two numbers are in the ratio 3 : 5. When 4 is subtracted from each, the ratio becomes 1 : 2. What is the smaller number?

Competition practiceRatio, Proportion & Mixtures
  • A20
  • B12
  • C8
  • D16

Step-by-Step Solution

gives , so . Numbers 12 and 20; check 8 : 16 = 1 : 2.
Answer: B) 12

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