There are enough provisions in a castle to feed 300 people for 90 days. After 30 days, 100 people leave the castle. How many more days are left until all the food runs out?
Let's think: After 30 days, there will be enough food left to sustain 300 people for 90 days – 30 days = 60 days. After the 100 people leave, there will be 300 - 100 = 200 people left. The 200 people will eat 200 / 300 = 2 / 3 as much food as the original group of people in the castle. The 60 days' worth of food will last this smaller group for 60 days / (2 / 3) = 90 more days.. The answer is: 90.

Ayla has a customer care job whose primary role is to hear complaints from customers and advise them on the best way to solve their problems. She talks with each customer for a limited amount of time, and each phone call is charged five cents per minute. If each call lasts 1 hour, what's the phone bill at the end of the month if she manages to talk to 50 customers a week?
Let's think: An hour has 60 minutes. If each call lasts an hour, the total amount of money charged is 60 * .05 = $3 for 1 customer. When she talks to 50 clients in a week, the total amount of money charged is 50 * 3 = $150. In a month of 4 weeks, the phone bill is 150 * 4 = $600.. The answer is: 600.

At the beginning of the day there were 74 apples in a basket. If Ricki removes 14 apples and Samson removes twice as many as Ricki. How many apples are left in the basket by the end of the day?
Let's think: There are 74 - 14 = 60 apples left after Ricki removes some. Samson removes 14 * 2 = 28 apples. There are 60 - 28 = 32 apples left after Samson removes some.. The answer is: 32.

Shelly makes braided keychains for her friends at school. Each keychain takes 12 inches of thread to braid. This year, she made six friends in classes and half that number from after-school clubs. She wants to make each of them a keychain. How many inches of thread does Shelly need?
Let's think:
Shelly made 6 / 2 = 3 friends from after - school clubs. She made 6 + 3 = 9 new friends at school this year. Shelly will need 9 * 12 = 108 inches of thread to make each friend a keychain.. The answer is: 108.