SSC MTS 2021 · PYQ · Ratio and Proportion · medium
What number must be subtracted from each of the numbers 55, 23, 43 and 19, so that the new values are in proportion?
Answer
The correct answer is A: 7. Let the number be x. (55-x)/(23-x) = (43-x)/(19-x).
- A.7✓ Correct
- B.5
- C.9
- D.11
Let the number be x. (55-x)/(23-x) = (43-x)/(19-x). Cross-multiplying and solving gives x = 7. Check: 48/16 = 36/12 = 3. Correct.
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