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What is the least common multiple (LCM) of 15 and 24?

Mathematics

ScanSolve AI Answer

Answer

120 cm\text{120 cm}

Step-by-step solution

3 steps
  1. Find the prime factorization of 15.

    15=3×515 = 3 \times 5
  2. Find the prime factorization of 24.

    24=2×12=2×2×6=2×2×2×3=23×324 = 2 \times 12 = 2 \times 2 \times 6 = 2 \times 2 \times 2 \times 3 = 2^3 \times 3
  3. Determine the Least Common Multiple (LCM) of 15 and 24.

    To find the LCM, we take the highest power of each prime factor present in either factorization.
    The prime factors are 2, 3, and 5.
    The highest power of 2 is 232^3.
    The highest power of 3 is 313^1.
    The highest power of 5 is 515^1.

    LCM(15,24)=23×3×5=8×3×5=24×5=120LCM(15, 24) = 2^3 \times 3 \times 5 = 8 \times 3 \times 5 = 24 \times 5 = 120

    The minimum length of each of the big pieces of wood is 120 cm.

    The minimum length of each of the big pieces of wood is 120 cm\text{120 cm}.

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