Bob has a cube of silver that measures 3 inches on each side. A cubic inch of silver weighs 6 ounces. Each ounce of silver sells for $25. He sells it for 110% of its silver value. How much does he sell it for? Give the rationale and then the answer.
Let's think step by step. The silver has a volume of 3 * 3 * 3 = 27 cubic inches. So it weighs 27 * 6 = 162 ounces. So its value is 162 * 25 = $4050. That means he sold it for 4050 * 1.1 = $4455.. The answer is: 4455.

Mary has 400 sheep on her farm. She gave a quarter of her sheep to her sister, and half of the remaining sheep to her brother. How many sheep remain with Mary? Give the rationale and then the answer.
Let's think step by step. Mary gives 1 / 4 * 400 = 100 sheep to her sister. She now has 400 - 100 = 300 sheep remaining. She then gives 1 / 2 * 300 = 150 sheep to her brother. So 300 - 150 = 150 sheep remain.. The answer is: 150.

A chocolate bar weighs 125 g. A shopkeeper has just received a 2 kilogram box of chocolate. How many bars does this represent? Give the rationale and then the answer.
Let's think step by step. We have 2 kg = 2 * 1000 = 2000 g. So, the number of bars of chocolate is 2000 / 125 = 16.. The answer is: 16.