Practice | Hashtable

Home > Practice > Arithmetic Aptitude > Ratio and Proportion > Miscellaneous

1. If 3A = 5B and 4B = 6C, then A : C equal to -

A. 2 : 5

B. 3 : 5

C. 4 : 5

D. 5 : 2

Solution:

\begin{aligned} = 3A = 5B and 4B = 6C \\ \Rightarrow \frac{A}{B} = \frac{5}{3} and \frac{B}{C} = \frac{6}{4} = \frac{3}{2} \\ \Rightarrow \frac{A}{C} = (\frac{A}{B} \times \frac{B}{C}) = \frac{5}{3} \times \frac{3}{2} = \frac{5}{2} \\ \Rightarrow A : C = 5 : 2 \end{aligned}

You must login to add comments. Login now.