alleryThe duplicate ratio of 3 : 4 is
A1.732 : 2
B9 : 16
C6 : 8
D4 : 3
Answer & Solution
Correct answer: B. 9 : 16
1. The duplicate ratio of a : b is defined as a^2 : b^2.
2. Squaring both terms of 3 : 4 gives 3^2 : 4^2.
3. That equals 9 : 16.
4. Option D (6 : 8) is just 3 : 4 doubled, not squared, so it is the trap.
_Source: ICAI BoS Foundation Paper 3, Ch 1 Unit I 'Ratio', p.5 Ex.1(A) Q5_
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