If W1:W2 = 2:3 and W1:W3 = 1:2 then W2:W3 is:
$$\frac{W_{1}}{W_{2}}=\frac{2}{3}$$ (given)
$$\frac{W_{1}}{W_{3}}=\frac{1}{2}$$ (given)
putting value of $$W_{1}$$from first equation to second equation and after solving it we will get
$$\frac{W_{2}}{W_{3}}=\frac{3}{4}$$Â
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