Final answer:
The most accurate estimate for how much more green felt James has than blue felt is 11/15 yard.
Step-by-step explanation:
To find out how much more green felt James has compared to blue felt, we need to subtract the amount of blue felt (1/10 yard) from the amount of green felt (5/6 yard). This can be done by finding a common denominator, which in this case is 30. So, 1/10 yard is equivalent to 3/30 yard, and 5/6 yard is equivalent to 25/30 yard. Subtracting the two, we get 25/30 - 3/30 = 22/30 yard. Simplifying this fraction, we get 11/15 yard. Therefore, the most accurate estimate for how much more green felt James has than blue felt is 11/15 yard.