Data related to number of books purchased be two Libraries (A and B) during 6 yr What is the respective ratio between total number of books purchased for libraries A and B together in 2003 and total number of books purchased for the same libraries together in 2007?
A) 22 : 37
B) 22 : 31
C) 11: 12
D) 11:19
E) 22 : 35
Correct Answer: B
$ \therefore $ Required ratio $ =\frac{880}{1240}=\frac{22}{31}=22:31 $