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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

Answer: Option A

Solution(By Examveda Team)

$$\eqalign{ & = \frac{{{{\text{W}}_{\text{2}}}}}{{{{\text{W}}_{\text{1}}}}} = \frac{3}{2}{\text{and}}\frac{{{{\text{W}}_{\text{1}}}}}{{{{\text{W}}_{\text{3}}}}} = \frac{1}{2} \cr & \Rightarrow \frac{{{W_2}}}{{{W_3}}} = \left( {\frac{{{{\text{W}}_{\text{2}}}}}{{{{\text{W}}_{\text{1}}}}} \times \frac{{{{\text{W}}_{\text{1}}}}}{{{{\text{W}}_{\text{3}}}}}} \right) \cr & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = \frac{3}{2} \times \frac{1}{2} = \frac{3}{4} \cr & \Rightarrow {W_2}:{W_3} = 3:4 \cr} $$

This Question Belongs to Arithmetic Ability >> Ratio

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