A trader bought 40 quintals of sugar at ruppe 450 a quintal and 60 quintals at a rupee 440 a quintal and mixed them together at what price a quintal must be sold at to gain 12%
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So 40 quintals' total price= 40*450=18000
60 quintals' total price= 60*440=26400
total price of mixed sugar= Rs 44400
new price per quintal= total price/total amt of sugar
= Rs. 444
so new selling price= 444+[12 1/2 * 1/100 *444] (as 12 1/2% means 12 1/2 out of 100)
= 444+ 55.5
= Rs. 499.5
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