Answer:
2.6 meters left
Explanation:
One way you can solve this problem is by putting it into an equation and finding the difference.
The equation would be 5 - 0.9 - 1.5 = ?
5 - .9 = 4.1
4.1 - 1.5 = 2.6
therefore, 2.6 meters of ribbon will be left on the spool.