[Solved] 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.

This riddle has been around for some time on internet platforms such as Instagram, Facebook, and WhatsApp, and many people still argue over what the answer might be, as there are many possibilities. The correct answer is 20 percent. For example, there are 10 bolts.  Since the number of bolts is 25 percent of the number of items, there must be 40 nuts. The total number of items = 10 bolts + 40 nuts = 50.  So, 10/50 = 1/5 = 20%.