Answer:
There are 7.5 pieces. 
Explanation:
Given : Tom used 
 yard of ribbon to tie weights on the tail of his kite. He cut the length of ribbon in equal pieces that were
 yard of ribbon to tie weights on the tail of his kite. He cut the length of ribbon in equal pieces that were 
 yard long.
 yard long.
To find : How many pieces, each 
 yard long did Tom cut from the
 yard long did Tom cut from the 
 yard ribbon?
 yard ribbon?
Solution : 
The total length of the yard ribbon is 

The length of the one piece cut from total is 

Let 'x' be the number of pieces.
According to question,





So, There are 7.5 pieces.