There are 60 minutes in an hour
A twelfth of an hour is 5 minutes,
Three-twelfths of one hour is (3 x 5) = 15 minutes.
Three-twelfths of four hours is (4 x 15) = 60 minutes.
So, three-twelfths of 4 hours is 1 hour.
There are 4 twelfths in 1/3
14 has 168 twelfths. 1/4 has 3 twelfths.
3/4
4/3
1 third is the same as 4 twelfths, so 6 twelfths plus 4 twelfths is 10 twelfths.
3
7 1/3
1/3
3/4
1/3
1/3 x 4/4 = 4/12 so no 1 third is 1 twelfth more than 3 twelfths
9/12, or 3/4