The compound ratio of 2:3, 4:5 and 5:6 is
A40:90
B2:9
C4:9
D8:27
Answer & Solution
Correct answer: C. 4:9
Compound ratio multiplies the antecedents and consequents: (2×4×5) : (3×5×6) = 40 : 90 = 4 : 9 (after dividing by 10). Verify both forms are equivalent.
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