5.a) Steve - 60=5×12
= 5×3×2×2
5.b) Ian - 60=6×10
= 3×2×5×2.
Discussion - The prime factors reduce to the same numbers in both Steve's and Ian's case.
5.c) Case 1 of 48 = 6×8
= 3×2×2×2×2.
Case 2 of 48 = 12×4
= 2×2×3×2×2.
