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If A:B = 2:3, B:C = 4:5 and C:D = 6:7, then A:B:C:D is:

Answer»

16:24:30:35



A:B = 2:3, B:C = 4:5 = (4 * 3/4):(5 * 3/4) = 3:15/4 

and C:D = 6:7 = (6 * 15/24):(7 * 15/24) = 15/4:35/8 A:B:C:D = 2:3:15/4:35/8 = 16:24:30:35



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