Answer:
8.5 inch × 10.625 inch.
Explanation:
We have the dimensions of the card are 4 inch × 5 inch.
Also, the dimensions of the paper are
i.e. 8.5 inch × 11 inch.
Now, the possible enlargement in the sides are given by,


So, the maximum enlargement possible is 2.125x, where x represents the values of the dimensions of the cards.
Thus, the maximum enlargement possible is 2.125 × 4 = 8.5 and 2.125 × 5 =10.625.
Hence, the dimensions of the largest enlargement possible are 8.5 inch × 10.625 inch.