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JAMB Mathematics 2010 Question 13

Question 13

Algebraic Expressions

Make Q the subject of the formula if P = (M/5)(X + Q) + 1.

  1. A.(5P + MX − 5)/M
  2. B.(5P − MX − 5)/M
  3. C.(5P − MX + 5)/M
  4. D.(5P + MX + 5)/M
Show the answer and explanation

Answer: B ((5P − MX − 5)/M)

Explanation

5P = MX + MQ + 5, so MQ = 5P − MX − 5 and Q = (5P − MX − 5)/M.