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  Choose the correct choice:
A) 3:13  B) 9:13  C) 36:13  D) 13:9  E) none
Solution: (A/B)*(B/C) = (3/4)*(12/13);   Or, A/B = 36/39 = 9:13.   Answer: Option 9:13
<result>B</result>
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