Question

ben is 140cm tall. Mike is 1090mm tall. Who is taller? how much taller?

Answer 1

1 cm = 10 mm

Ben = 140 cm
Mike = 1090/10 = 109 cm

140 - 109 = 31
31 * 10 = 310

Ben is taller by 31 cm or 310 mm

Answer 2

1090mm = 109cm
Ben is taller.