passwella.
Menu

JAMB Mathematics 1986 Question 3

Question 3

Fractions, Decimals and Approximation

Divide the L.C.M. of 48, 64 and 80 by their H.C.F.

  1. A.20
  2. B.30
  3. C.48
  4. D.60.
Show the answer and explanation

Answer: D (60.)

Explanation

48 = 2⁴ × 3, 64 = 2⁶, 80 = 2⁴ × 5. L.C.M. = 2⁶ × 3 × 5 = 960 and H.C.F. = 2⁴ = 16. 960 ÷ 16 = 60.