A : B = 5 : 8 and B : C = 18 : 25 then A : C = ……………… A)

1.	A : B = 5 : 8 and B : C = 18 : 25 then A : C = ……………… A) 2 : 9 B) 9 : 20 C) 1 : 10 D) 16 : 5
Answer» Correct option is (B) 9 : 20 A : B = 5 : 8 and B : C = 18 : 25 A : C = \(\frac{A:B}{C:B}=\frac{5:8}{25:18}\) \(=\frac58\times\frac{18}{25}\) \(=\frac{18}{8\times5}\) \(=\frac9{4\times5}\) \(=\frac9{20}\) = 9 : 20 Thus, A : C = 9 : 20 Correct option is B) 9 : 20

A : B = 5 : 8 and B : C = 18 : 25 then A : C = ……………… A) 2 : 9 B) 9 : 20 C) 1 : 10 D) 16 : 5

Answer»

Correct option is (B) 9 : 20

A : B = 5 : 8 and B : C = 18 : 25

A : C = \(\frac{A:B}{C:B}=\frac{5:8}{25:18}\)

\(=\frac58\times\frac{18}{25}\) \(=\frac{18}{8\times5}\)

\(=\frac9{4\times5}\) \(=\frac9{20}\)

= 9 : 20

Thus, A : C = 9 : 20

Correct option is B) 9 : 20