Question

If A : B = 82 : 5 and B :" C = 4 : 5, then C : A = ?

Answer 1

Answer:

$A:B \: = 82 :5 \\ B:C = 4 : 5 \\ \frac{A} {\cancel{B}} \times \frac{\cancel{B}}{C} = \frac{82}{5} \times \frac{4}{5} = \frac{328}{25} \\ \frac{A}{C} = \frac{328}{25} \\ \therefore \: \frac{C}{A} = \frac{25}{328} \\ \\ C : A = 25 : 328 \boxed{ \red{ \huge{ \mathfrak{answer}}}}$