The LCM of 60 and 21 is 420
Wiki User
∙ 2015-11-19 11:12:3421
10 hours, 21 minutes ! To find this out divide the number by 60. So 621/60=10 hours, 21 minutes.
Divide the number of minutes by 60. This will give the number of hours.
300 is the smallest number that 10 25 and 60 will divide into evenly
Designate the unknown number by x. Then (60 %)x = 21, or 0.6x = 21, or x = 35
If you divide 60 by 6 the result is 10.
Divide by 80.
21 is 35% of 60
Divide the number by 10 and then times that number by 6
21
Divide 1 by the number: 1/21 = 0.048 (rounded).
45 doesn't divide into 60 evenly.