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Find ratio of books read by B & C together in 2005 to books read by A & D together in 2006.

a

15 : 16

b

5 : 6

c

1 : 5

d

4 : 7

e

2 : 3

Answer : Option A
Explanation :

Required ratio = 60+9090+70frac{{60 + 90}}{{90 + 70}}

=150160=15:16 = frac{{150}}{{160}} = 15:16

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