[Question]John buys 30 ducks for $10 each. They weigh 4 pounds and he sells them for $5 per pound. How much profit did he make?
[Answer]He bought the ducks for 30 * 10 = $300. He sold each duck for 4 * 5 = $20. So he sold all the ducks for 30 * 20 = $600. So he made a profit of 600 - 300 = $300. The answer is 300.

[Question]Georgia is working on a math test with 75 problems on it. After 20 minutes she has completed 10 problems. After another 20 minutes, she has completed twice as many problems. She has 40 minutes to complete the rest of the test. How many problems does she have left to solve?
[Answer]Georgia's test started with 75 problems and then Georgia completed 10, 75 - 10 = 65 problems. After 20 minutes she completes twice as many problems, 10 x 2 = 20. With 40 minutes left she has completed 10 + 20 problems = 30 problems. From the original 75 problems she has solved 30, 75 - 30 = 45 problems she has left. The answer is 45.

[Question]On March 1st the sun sets at 6 PM. Every day after the sun sets 1.2 minutes later. It is 6:10 PM and 40 days after March 1st. How many minutes until the sun sets?
[Answer]The sun will set 40 * 1.2 = 48 minutes later than it does on March 1st. That means the sun will set at 6:00 + 48 = 6:48 PM. So that means the time until sunset is 6:48 - 6:10 = 38 minutes. The answer is 38.

[Question]The total average age of three friends is 40. Jared is ten years older than Hakimi, and Molly's age is 30. How old is Hakimi?
[Answer]
The total age for the three friends is 40 * 3 = 120. If Molly's age is 30, then Jared and Hakimi have a total age of 120 - 30 = 90. Let's say the age of Hakimi is x. Since Jared is 10 years older than Hakimi, Jared is x + 10 years old. Jared and Hakimi's total age is x + (x + 10) = 90. This translates to 2x = 90 - 10. 2x = 80. Hakimi's age is x = 80 / 2. This gives us x = 40, which is Hamkimi's age. The answer is 40.