**Math Riddle**: A box of hardware contains nuts and bolts. The bolts account for 25 percent of the number of items in the box. What percentage are the bolts of the entire box?

**Answer**: The correct answer is 20 percent.

For instance, there are 10 bolts. Since the quantity of screws is 25 percent of the number of things, there must be 40 nuts. The absolute number of things = 10 screws + 40 nuts = 50. So, 10/50 = 1/5 = 20%.

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