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JAMB Mathematics 2005 Question 12

Question 12

Fractions, Decimals and Approximation

If m = 3, p = −3, q = 7 and r = 5/2, evaluate m(p + q + r).

  1. A.19.50
  2. B.19.15
  3. C.18.95
  4. D.18.05
Show the answer and explanation

Answer: A (19.50)

Explanation

p + q + r = −3 + 7 + 2.5 = 6.5, and 3 × 6.5 = 19.5.