If A:B = 2:3, B:C = 4:5 and C:D = 5:9 then A:D is equal to:
Choose the correct choice from the following answers:
A) 11:17 B) 8:27 C) 5:9 D) 2:9 E) none
Solution:   A/D = (A/B)*(B*C)*(C/D)   = (2/3)*(4/5)*(5/9)   = (2*4*5)/(3*5*9)   = 8/27.   Answer: Option 8:27
<result>B</result>
If A:B = 2:3, B:C = 4:5 and C:D = 5:9 then A:D is equal to: