Marri bought 1/2 pound licorice, 1/3 pound of candy worms, and 2/5 pound of jawbreakers. How many more pounds of licorice than jawbreakers did she buy?

The licorice weighs 1.5 - 2/5 = <<1.5-2/5=1.1>>1.1 pound more than the jawbreakers. Answer: \boxed{1.1}.

To find out how many more pounds of licorice Marri bought than jawbreakers, we need to subtract the weight of jawbreakers from the weight of licorice.

First, let's calculate the weight of licorice:
1/2 pound licorice

Now, let's calculate the weight of jawbreakers:
2/5 pound jawbreakers

To subtract the weight of jawbreakers from the weight of licorice, we subtract 2/5 from 1/2:

1/2 - 2/5 = (5/10) - (4/10) = 1/10

Therefore, Marri bought 1/10 more pounds of licorice than jawbreakers.

To find out how many more pounds of licorice Marri bought than jawbreakers, we need to calculate the difference between the weights of licorice and jawbreakers.

The weight of licorice is given as 1/2 pound, and the weight of jawbreakers is given as 2/5 pound. To calculate the difference, we subtract the weight of jawbreakers from the weight of licorice.

The formula to calculate the difference is:

Difference = Weight of licorice - Weight of jawbreakers

Substituting the given values, we have:

Difference = 1/2 pound - 2/5 pound

To subtract fractions, we need to have a common denominator. In this case, the least common multiple (LCM) of 2 and 5 is 10. Therefore, we need to convert both fractions to have a denominator of 10.

1/2 pound = (1/2) * (10/10) pound = 5/10 pound
2/5 pound = (2/5) * (2/2) pound = 4/10 pound

Now we can calculate the difference:

Difference = 5/10 pound - 4/10 pound
= (5 - 4)/10 pound
= 1/10 pound

Therefore, Marri bought 1/10 pound more licorice than jawbreakers.