Alissa cut a piece of string that was 17 feet long. darnell cut a piece of string that was 5 yards longer. alissa wanted to cut her string so that it was the same length as darnells. how many feet did she need to cut off

Alissa cut a piece of string that was 17 feet long.

Darnell cut a piece of string that was 5 yards long. 
We know that there are 3 feet in a yard, so to convert Darnell's string length into feet we just have to multiply it by 3.
(5) * 3 = 15 feet

Alissa wants to cut her string so that it was the same length as Darnell's.

We know that Alissa's string was 17 feet long, and that Darnell's string is 15 feet long. 

17 - 15 = 2.

Therefore, Alissa should cut off 2 feet of her string.