What is the shortest possible length of timber from which equal pieces of 24 cm and 36 cm can be cut?

Answer 1

24+36 = 60
That will give one of each.

not sure how 24 and 36 cm pieces can be equal, but LCM(24,36) = 72
72 cm is the shortest length that can be cut evenly into both 24- and 36-cm pieces