A tin contains 20kg of ghee. Rao consumed 2⁄4 of it for preparing medicines. From the remaining ghee Rao used 2⁄5 and 1⁄2 of it for making laddu and burfi. How much ghee is left?
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ghee used in meds = 20×2/4 = 10 kg
remaining = 10 kg
ghee used in laddu = 10×2/5 = 4 kg
remaining = 10 - 4 = 6 kg
ghee used in burfi = 6 × 1/2 = 3 kg
remaining = 6 - 3 = 3kg
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