A vendor at the market is selling sunglasses for $30 each. He has to spend a certain amount to buy these sunglasses. He sells 10 pairs in a day. He then takes half his profits and uses it to buy a new sign, which costs $20. How much does each pair of sunglasses cost him to buy? Think carefully first, then make a decision:
User
His profits were $40 because 20 / .5 = 40. He made $300 selling sunglasses because 10 x 30 = 300. His costs for the sunglasses were $260 because 300 - 40 = 260. The sunglasses cost him $26 each because 260 / 10 = 26. So, the answer is 26.
Assistant