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  1. If A and B are in the ratio 3 : 4, and B and C in the ratio 12 : 13, then A and C will be in the ratio
    1. 3 :13
    2. 9 : 13
    3. 36 :13
    4. 13 : 9
Correct Option: B

A : B = 3 : 4 = 9 : 12
B : C = 12 : 13
∴  A : B : C = 9 : 12 : 13
⇒;  A : C = 9 : 13
Second Method :
A : C = xp : yq
= 3 × 12 : 4 × 13
= 9 : 13


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