Final answer:
To find the number of blank piles, we can set up a proportion and solve for x.
Step-by-step explanation:
To find the number of newspaper piles, we can set up a proportion.
10 newspapers in 2 piles is equivalent to 5 newspapers in blank piles.
Let x be the number of blank piles.
Using the proportion, we have:
10/2 = 5/x
Cross-multiplying, we get:
10x = 5 * 2
10x = 10
x = 1
Therefore, there is 1 blank pile of newspapers.