1. The wheat sold by a grocer contained 10% low-quality wheat. What quantity of good-quality wheat should be added to 150 kg of wheat so that the percentage of low-quality wheat becomes 5% ?
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By: anil on 05 May 2019 01.33 am
150 Kg of weight contains 10% low quality weight that is 15 Kg low quality weight.
Let the quantity of good quality wheat to be added be X.
So, $$15 = frac{5}{100}*(150+X)$$
Or, $$300 = 150+X$$ So X = 150 Kg
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Let the quantity of good quality wheat to be added be X.
So, $$15 = frac{5}{100}*(150+X)$$
Or, $$300 = 150+X$$ So X = 150 Kg