Jo's collection contains US, Indian and British stamps. If the ratio of US to Indian stamps is 5 to 2 and the ratio of Indian to British stamps is 5 to 1, what is the ratio of US to British stamps?  Choose the correct answer:
A) 5 : 1 B) 10 : 5 C) 15 : 2 D) 20 : 2 E) 25 : 2
Ratio of US to Indian stamps is 5:2   U/I = 5:2   = 25:10   ratio of Indian to British stamps is 5 : 1   I/B = 5:1   =10:2   Now , Ratio of US to British stamps   U/B = 25:2   Answer 25 : 2
<result>E</result>
Jo's collection contains US, Indian and British stamps. If the ratio of US to Indian stamps is 5 to 2 and the ratio of Indian to British stamps is 5 to 1, what is the ratio of US to British stamps?