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QUESTION
Calculating ratios and percentages - converting into units
The total weight of a substance is 5 grams and is made up of the following:
61.4% - (A)31.6% - (B)7% - (C)
Calculate the weight (g) of each component to be added if (C) is:
(i) increased to 10%
(i) decreased to 3%
Keeping the A:B ratio the same throughout
