the least common denominator of three fifths and two fifteenths and one sixth is 30. you multiply 15 by two, 6 by five, and 3 by ten.
There are infinitely many fractions between one sixth and three fifths.
Five ninths times three fifths is one third.
It is: 3/5 which is 0.6 as a decimal and 60% as a percentage
The sum is 23/30
Two fifths is 140% more than one sixth.