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JAMB Mathematics 2005 Question 3

Question 3

Fractions, Decimals and Approximation

Simplify 3½ − (2⅓ × 1¼) + 3/5

  1. A.2 11/60
  2. B.2 1/60
  3. C.1 11/60
  4. D.1 1/60
Show the answer and explanation

Answer: C (1 11/60)

Explanation

2⅓ × 1¼ = 35/12. Then 7/2 − 35/12 + 3/5 = (210 − 175 + 36)/60 = 71/60 = 1 11/60.