Commodity               Price in Year $$2010$$ ($$p_0$$)      Price in Year $$2014$$ ($$p_1$$)              Weight $$w$$                 $$p_0w$$                           $$p_1w$$ $$A$$$$02$$$$04$$$$08$$$$16$$$$32$$ $$B$$$$05$$$$06$$$$10$$$$50$$$$60$$ $$C$$$$04$$$$05$$$$14$$$$56$$$$70$$ $$D$$$$02$$$$02$$$$19$$$$38$$$$38$$ Total$$sum p_0w = 160$$$$sum p_1w = 200$$ Using weighted aggregate method, the required price index $$=dfrac{sum p_1w}{sum p_0w} imes 100=dfrac{200}{160} imes 100 = 125$$.