We have a question: Porche has 3 hours to get all her homework done. Her math homework takes her 45 minutes. Her English homework takes her 30 minutes. Her science homework takes her 50 minutes. Her history homework takes her 25 minutes. She also has a special project due the next day. How much time does she have left to get that project done?
And an answer: 30
So how you got the answer?
She has 180 minutes to do work because 3 times 60 equals 180. She has already spent 150 minutes on homework because 45 plus 30 plus 50 plus 25 equals 150. She has 30 minutes to finish her project because 180 minus 150 equals 30.

We have a question: Kennedy's house is 600 square feet larger than 4 times Benedict's house. If Kennedy's house is 10000 square feet, how many square feet is Benedict's house?
And an answer: 2350
So how you got the answer?
Let the number of square feet in Benedict's house be x. So, we can write the equation 4 * x + 600 = 10000. Subtracting 600 from both sides we get 4 * x = 9400. Dividing both sides by 4 we get x = 2350 square feet.

We have a question: Trent caught 180 tadpoles then let 75% of them go. How many did he keep?
And an answer: 45
So how you got the answer?
First find the number of tadpoles Trent released: 180 tadpoles * .75 = 135 tadpoles. Then subtract the number he let go from the total number to find the number of tadpoles he keeps: 180 tadpoles - 135 tadpoles = 45 tadpoles.