12
1/5 x 12 = 2.4
12 seconds 60/5 = 12/1 = 12
1/5 x 12/1 = 12/5
1 and 1 fifth = 6/5 = 12/10 1 half = 1/2 = 5/10 12/10 - 5/10 = 7/10
2.4 One-fifth of twelve is also written as: (1/5) x 12. I.e., 12/5 = 2.4
1/5 ÷ 12 = 1/60
(1/5) x (12) = 12/5 = 2.4
12 minutes
72 mins: 60 divided by 5 (1 fifth) is 12 mins, there's 60 mins in and hour, 60 + 12 = 72
60/65 + 12/65 = 72/65 or 1 and 7/65
1/5 x 60 = 12