Mathematics (AS & A Level) · May / June 2017 · Paper 33 · Question 8
9709
As printed in the paper
The question as text
In a certain chemical reaction, a compound A is formed from a compound B. The masses of A and B at time t after the start of the reaction are x and y respectively and the sum of the masses is equal to 50 throughout the reaction. At any time the rate of increase of the mass of A is proportional to the mass of B at that time. dx
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8(i)[1]
8(ii)[8]
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