What is the LCM of 2.5, 1.2, 20 and 7.5? (Help me...where did I go wrong with this?)

[anon321]

a) 60 b) 65 c) 70 d) 50

Answer is a) 60. Please explain me where I went wrong as my answer turned out to be 300.

 

[Dr.Peterson]

[h=2]What is the LCM of 2.5, 1.2, 20 and 7.5? (Help me...where did I go wrong with this?)[/h]a) 60 b) 65 c) 70 d) 50

Answer is a) 60. Please explain me where I went wrong as my answer turned out to be 300.

Please show what you did; otherwise, we can only guess where you went wrong!