Answer

in 1/2 hour Brenda finished 1/3 Braclet

How many time she will need to finish all the braclet?

The complete braclet is represented in a 1 unit.

She will need 1/3 + 1/3 + 1/3 to get 1. Therefore we need 3 times 1/3 to complete the unit.

And as for every 1/3 Brenda needs 1/2 hour. Then for the total unit she will need:

3 x 1/2 hour.

The answer is : 3 x 1/2 = 3/2 hours or 1 and a 1/2 hours to complete the Braclet.