यदि a ∶ b = c ∶ d = 2.5 ∶ 1.5 है, तो (a + c) ∶ (b + d) का मान कितना होगा? 

1
\(\frac{5}{3}\)
2
\(\frac{4}{5}\)
3
\(\frac{3}{4}\)
4
\(\frac{3}{5}\)

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