Q: Tim decides to start selling necklaces he makes. He uses 10 charms to make each necklace. Each charm cost $15. He sells the necklace for $200. How much profit does he make if he sells 30?
A: Each necklace cost 10 * 15 = $150 to make. So he makes a profit of 200 - 150 = $50 each. So his total profit is 50 * 30 = $1500. The answer is 1500.

Q: Genevieve picked some cherries from the supermarket shelves that cost $8 per kilogram. When Genevieve reached the checkout counter, she realized she was $400 short of the total price and her friend Clarice chipped in. If Genevieve had $1600 on her, how many kilograms of cherries did she buy?
A: If Genevieve had $1600 on her, and Clarice chipped in with $400, the total cost of the cherries was $1600 + $400 = $2000. If the cherries cost $8 per kilogram, Genevieve bought $2000 / $8 = 250 kilograms of cherry. The answer is 250.

Q: The sewers in Middleton can handle 240,000 gallons of run-off. Each hour of rain produces 1000 gallons of runoff. How many days of rain can the sewers handle before they overflow?
A:
First find how many hours of runoff the sewers can handle: 240,000 / 1000 gallons / hour = 240 hours. Then divide that time by the number of hours per day to find how many days of rain the sewers can handle: 240 hours / 24 hours / day = 10 days. The answer is 10.