In some quantity of ghee, 60% is pure ghee and 40% is vanaspati. If 10kg of pure ghee is added , then the strength of vanaspati ghee becomes 20% . The original quantity was :
Let the original quantity be `x` kg. Vanaspati ghee in `x` kg = `(40/100 x)kg = ((2x)/(5))` kg
Now ,`((2x)/(5))/(x + 10) = 20/100 hArr (2x)/(5x + 50) = 1/5 hArr 5x = 50 hArr x `= 10.
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