Question

Find the compounded ratio of $\frac{3}{5},\frac{7}{8}$ and $\frac{5}{10}$

• A. $\frac{21}{80}$
• B. $\frac{21}{10}$
• C. $\frac{80}{27}$
• D. $\frac{5}{11}$

Answer 1

The correct option is A $\frac{21}{80}$

let be $a=\frac{3}{5},b=\frac{7}{8},c=\frac{5}{10}$
therefore the $ratio=a\times b\times c=\frac{3\times 7\times 5}{5\times 8\times 10}=\frac{21}{80}$