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WAEC Mathematics 2015 Theory — Question 18

Question 18 of 22 from the West African Examinations Council (WAEC) Mathematics 2015 Theory paper, with the correct answer and a full explanation.

11(a). Make m the subject of the relation h=mt/[d(m+p)]

Model answer

h·d(m+p)=mt → hdm+hdp=mt → hdp=mt−hdm → hdp=m(t−hd) → m = hdp/(t−hd).

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