A is 20% more than B. B is 25% less than C. Find the ratio between A and C?

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RRB Clerk Prelims Memory Based Paper (Held On: 17 August 2024 Shift 4)
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  1. 6 : 11
  2. 5 : 7
  3. 9 : 10
  4. 11 : 19
  5. 17 : 19

Answer (Detailed Solution Below)

Option 3 : 9 : 10
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Detailed Solution

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Calculation

A = 1.2B (20% more)

B = 0.75C (25% less)

Substitute:

A = 1.2 × 0.75C = 0.9C

Thus,

A : C=0.9

Or, A : C = 9  : 10 

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