1.

 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?

A. 10 : 5
B. 15 : 2
C. 20 : 2
D. 25 : 2
Answer» E.


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