Answer:
D
Step-by-step explanation:
add all sides together and multiply like a regular square and then divide by 2
Since both fractions mean to divide, I like to divide the numerators by the denominator, and I'll show you how I do it ----
7/10 = 0.7, or 70%
4/5 = 0.8, or 80%
You can now see that the 80% is larger than the 70%, and, this is why 7/10 is less than 4/5 :D
Elimination method I think not completely sure
