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If A : B = 3 : 7, B : C = 9 : 7 and C : D = 7 : 8, then A : B : C : D = ?

A27 : 49 : 63 : 56

B27 : 56 : 63 : 49

C27 : 49 : 56 : 63

D27 : 63 : 49 : 56

Answer:

D. 27 : 63 : 49 : 56

Read Explanation:

A : B = (3 : 7) × 9 = 27 : 63 B : C = (9 : 7) × 7 = 63 : 49 C : D = (7 : 8) × 7 = 49 : 56 A : B : C : D = 27 : 63 : 49 : 56


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