Practice | Hashtable

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

1. If W₁ : W₂ = 2 : 3 and W₁ : W₃ = 1 : 2, then W₂ : W₃ is -

A. 3 : 4

B. 4 : 3

C. 2 : 3

D. 4 : 5

Solution:

\begin{aligned} = \frac{W_{2}}{W_{1}} = \frac{3}{2} and \frac{W_{1}}{W_{3}} = \frac{1}{2} \\ \Rightarrow \frac{W_{2}}{W_{3}} = (\frac{W_{2}}{W_{1}} \times \frac{W_{1}}{W_{3}}) \\ = \frac{3}{2} \times \frac{1}{2} = \frac{3}{4} \\ \Rightarrow W_{2} : W_{3} = 3 : 4 \end{aligned}

You must login to add comments. Login now.