If A : B=5 : 4, B : C=6 : 5 C : D=7 : 10, then what is the value of A : D?
यदि A : B=5 : 4, B : C=6 : 5 C : D=7 : 10 है, तो A : D का मान क्या है?
Correct Answer:
\begin{align}
\frac{A}{B}\times \frac{B}{C} \times \frac{C}{D}=\frac{5}{4}\times \frac{6}{5} \times \frac{7}{10} \\
\frac{A}{D} = \frac{21}{20}\\
\end{align}
\begin{align}
\frac{A}{B}\times \frac{B}{C} \times \frac{C}{D}=\frac{5}{4}\times \frac{6}{5} \times \frac{7}{10} \\
\frac{A}{D} = \frac{21}{20}\\
\end{align}
