Question

Simeon has two lengths of rope. One piece is 72 metres long and the other is 90 metres long. He wants to cut both lengths of rope into the longest pieces of equal length possible. How long should the pieces be?

Answer 1

18

Explanation:

90=2×3×3×5

72=2×2×2×3×3

HCF of 90 and 72 =2×3×3=

18