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A. 2:3:5
B. 3:4:7
C. 4:5:9
D. None of these

Explanation:

A:B:C = (40000 * 36) : (80000 * 12 + 40000 * 24) : (120000 * 24 + 40000 * 12)

= 144:192:336 = 3:4:7

Correct Answer: 3:4:7

Last Updated: February 07, 2020