alleryThe sub-duplicate ratio of 25 : 36 is
A5 : 6
B50 : 72
C6 : 5
D36 : 25
Answer & Solution
Correct answer: A. 5 : 6
1. The sub-duplicate ratio of a : b is sqrt(a) : sqrt(b).
2. sqrt(25) = 5 and sqrt(36) = 6.
3. So the sub-duplicate ratio of 25 : 36 is 5 : 6.
4. Option C just doubles the original terms and is incorrect.
_Source: ICAI BoS Foundation Paper 3, Ch 1 Unit I 'Ratio', p.5 Ex.1(A) Q6_
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