A solution that contains 20% sugar by weight is made sweeter by doubling the amount of sugar.The percent of sugar, by weight, in the new solution is --

A solution that contains 20% sugar by weight is made sweeter by doubling the amount of sugar.The percent of sugar, by weight, in the new solution is -- Correct Answer 50%

lets say in a solution of 100 mg, 20% that is 20 mg is the sugar, so if it is doubled it will be 20*2 = 40 mg
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