AMC 10 2021a

What is the value of $\frac{(2112-2021)^2}{169}$?

$\textbf{(A) }7 \textbf{(B) }21 \textbf{(C) }49 \textbf{(D) }64 \textbf{(E) }91$

Portia's high school has $3$ times as many students as Lara's high school. The two high schools have a total of $2600$ students. How many students does Portia's high school have?

$\textbf{(A) }600 \textbf{(B) }650 \textbf{(C) }1950 \textbf{(D) }2000 \textbf{(E) }2050$