Question

You received 1/3 pound of candy from your grandmother, 1/2 pound of candy from your sister but your best friend at 1/5 pound of candy, hour much candy do you have left.

Answer 1

You received 1/3 + 1/2 pounds of candy from your grandmother and sister.
You lost 1/5 pound of candy due to your best friend.

Add 1/3 + 1/2 = 5/6.

Subtract 5/6 - 1/5 = 19/30.

You have 19/30 pounds of candy left.

Answer 2

$\frac{1}{3} + \frac{1}{2} - \frac{1}{5} \\ = \frac{10}{30} + \frac{15}{30} - \frac{6}{30} \\ = \frac{19}{30}$

Answer: You're left with 19/30 pound of candy.

Hope this helps. - M