Let
x----------> length side large photograph
y----------> width side large photograph and small photograph
Each large photograph has side lengths that are twice the side lengths of each small photograph
so
x/2--------> length side small photograph
we know that
The area of each small photograph is 24 in²
24=(x/2)*y------>24=x*y/2-----> 48=x*y
The area of each large photograph is-----> x*y
therefore
The area of each large photograph is 48 in²
the answer is
48 in²