One sixth of 30 minutes would be 5 minutes.
one sixth is 1/6. this as a decimal is .16666666etc. this as a present is 16.66666 %. One sixth of 30 would be approximately 16.66%.
5
About 16.667%.
20%
-6/30 + 5/30 = -1/30
One sixth of 30 is five. so two sixth of 30 is 2 x 5 = 10
5/30 + 12/30 = 17/30
25
24/30 - 5/30 = 19/30
1/6 x 30 = 5
1/30