There were sweets on the table. Jack came and took half of all the candies and 4 more candies. Then Paul came and took the remaining 7 sweets. How many sweets were on the table at first?
Let's think: Jack took 4 more candies than the half, and Paul took the rest, which means 7 + 4 = 11 candies were half of all candies. That means at first there were 11 * 2 = 22 candies.. The answer is: 22.

A farmer has three trucks to carry water to his farm. Each truck uses three tanks with a capacity of 150 liters of water. How many liters of water in total can the farmer carry in his trucks?
Let's think: 1 truck uses 3 tanks of 150 liters, so a truck can carry 3 tanks per truck * 150 liters = 450 liters per truck. The total amount of water the 3 trucks carry is 3 trucks * 450 liters per truck = 1350 liters.. The answer is: 1350.

Alicia has to buy some books for the new school year. She buys 2 math books, 3 art books, and 6 science books, for a total of $30. If both the math and science books cost $3 each, what was the cost of each art book?
Let's think: The total cost of maths books is 2 * 3 = 6 dollars. The total cost of science books is 6 * 3 = 18 dollars. The total cost for maths and science books is 6 + 18 = 24 dollars. The cost for art books is 30 - 24 = 6 dollars. Since he bought 3 art books, the cost for each art book will be 6 / 3 = 2 dollars.. The answer is: 2.

After Martha went grocery shopping she had 4 bottles of juice in the refrigerator and 4 bottles in the pantry. During the week Martha bought 5 more bottles of juice. If Martha and her family drank 3 bottles of juice during the week, how many bottles are left?
Let's think:
Martha had 4 bottles of juice in the pantry + 4 bottles in the refrigerator = 8 bottles of juice. After Martha went shopping she added 5 bottles of juice to the + 8 bottles she already had = 13 bottles of juice. Martha and her family drank 3 bottles of juice during the week from the 13 they had, 13 - 3 = 10 bottles left.. The answer is: 10.