X - 1/2 (if you meant the difference between)
Let's look at the corresponding ratios:

And we see that the three aren't equal.
Hence, $\Delta ABC$ and $\Delta EDC$ are not similar.
Not exactly
2/10 = .2
1/4 = .25
1/4 is 0.05 bigger than 2/10
Answer:
B. 2
Step-by-step explanation:
she has 2/3 of it done in an 1/3 of an then in an hour 6/3 will be done and 6/3 simplified is 2