-30 and -30
-30 + -30 = -60
-30 x -30 = 900
900 is 60% of 1500
960
Add any number to (60 minus the same number).
To convert minutes to hours, you divide the number of minutes by 60 since there are 60 minutes in an hour. Therefore, 900 minutes divided by 60 equals 15 hours.
Not too sure of your question but 15 is 25% of 60
60 + (-57) = 3
Number of seconds: 15 x 60 = 900 Number of 2-second intervals in 900: 900/2 = 450
There are 60 seconds in a minute. To convert seconds to minutes, you divide the number of seconds by 60. Therefore, 900 seconds divided by 60 equals 15 minutes.
900
900
It is: 900
1660