[Question]It takes Derek 9 minutes to walk a mile if he doesn't have to walk with his brother. If he has to take his brother it takes 12 minutes to walk a mile. How many minutes longer would it take him to walk 20 miles if he had to take his brother?
[Answer]Alone it would take him 9 * 20 = 180 minutes. With his brother, it would take him 12 * 20 = 240 minutes. 240 - 180 = 60 more minutes. The answer is 60.

[Question]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?
[Answer]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.

[Question]Sue is traveling from New York to San Francisco, 16 hours later after landing in New York from New Orleans. If the journey from New Orleans to New York took 3/4 times as much time as she takes to travel from New York to San Francisco, and she lands in San Francisco 24 hours later after departing from New York, calculate the total time she took to reach San Francisco from New Orleans?
[Answer]To travel from New Orleans to New York, Sue took 3 / 4 * 24 hours = 18 hours. If she stayed in New York for 16 hours, Sue's total time to travel from New Orleans to San Francisco is: 18 hours from New Orleans to New York + 16 hours in New York + 24 hours from New York to San Francisco = 58 hours. The answer is 58.

[Question]Bella is making bracelets for her 6 friends. She needs 8 beads per bracelet. She has 36 beads. How many more beads does she need to make all six bracelets?
[Answer]
Bella needs a total of 8 beads x 6 friends = 48 beads. She needs 48 beads 36 beads = 12 more beads. The answer is 12.