Kelly booked a three week vacation to visit relatives. The first day, she spent traveling. The next 5 days she spent at her Grandparents' house. The next day, she spent traveling. Then, she spends the next 5 days at her brother's house. Then she spent two days traveling to her sister's house, spent several days at her sister's house, and then spent two more days traveling home. How many days did she spend at her sister's house?
Let's think: Three weeks is 7 * 3 = 21 days. She traveled one day to her grandparents' house, one day to her brother's house, two days to her sister's house, and two days back home for a total of 1 + 1 + 2 + 2 = 6 days. She spent 5 days at her grandparents' house and 5 days at her brother's house, for a total of 5 + 5 = 10 days. Thus, of the 21 vacation days, the number of days remaining to spend with her sister was 21 - 6 - 10 = 5 days.. The answer is: 5.

CJ, KJ, and AJ collect stamps. CJ has 5 more than twice the number of stamps that KJ has, and KJ has half as many as AJ. If the three boys have 930 stamps all together, how many stamps does AJ have?
Let's think: Let x represent the number of stamps for AJ. KJ:x / 2 stamps. CJ:5 + 2(x / 2) = 5 + x. Total:x + (x / 2) + 5 + x = 930. (5 / 2)x + 5 = 930. (5 / 2)x = 925. x = 925(2 / 5) = 370 stamps.. The answer is: 370.

Travis is hired to take 638 bowls from the factory to the home goods store. The home goods store will pay the moving company a $100 fee, plus $3 for every bowl that is delivered safely. Travis must pay the home goods store $4 each for any bowls that are lost or broken. If 12 bowls are lost, 15 bowls are broken, and the rest are delivered safely, how much should Travis be paid?
Let's think: Travis has lost or broken 12 + 15 = 27 bowls. Travis will need to pay the store 27 x $4 = $108 dollars. Travis has safely taken 638 - 27 = 611 bowls. For this, he will be paid 611 x $3 = $1833 dollars. In total Travis will be paid $1833 + $100 = $1933 dollars. Since Travis has to pay the home goods 108 for the broken and lost bowls, he will end up with $1933 - $108 = $1825.. The answer is: 1825.

To run his grocery store, Mr. Haj needs $4000 a day. This money is used to pay for orders done, delivery costs and employees' salaries. If he spends 2/5 of the total operation costs on employees' salary and 1/4 of the remaining amount on delivery costs, how much money does he pay for the orders done?
Let's think:
The total amount of money Mr. Haj used to pay for employee salary is 2 / 5 * $4000 = $1600. After paying the employee salaries, Mr. Haj remains with $4000 - $1600 = $2400. He also uses 1 / 4 * $2400 = $600 on delivery costs. The remaining amount of money that he uses to pay for orders is $2400 - $600 = $1800.. The answer is: 1800.