We have a question: Mr. and Mrs. Boyden take their 3 children to a leisure park. They buy tickets for the whole family. The cost of an adult ticket is $6 more than the cost of a child ticket. The total cost of the 5 tickets is $77. What is the cost of an adult ticket?
And an answer: 19
So how you got the answer?
Let X be the cost of an adult ticket. So the cost of a child ticket is X - 6. The total cost of the 5 tickets is X * 2 + 3 * (X - 6) = 77. X * 2 + 3 * X - 3 * 6 = 77. 5 * X - 18 = 77. 5 * X = 77 + 18 = 95. X = 19.

We have a question: Georgina owns a parrot and is teaching it to speak. So far, the parrot knows seventeen phrases. If she is teaching it two phrases a week and it already knew three phrases when she bought it, how many days has Georgina had it?
And an answer: 49
So how you got the answer?
The parrot knew 3 phrases when Georgina bought it, so it has learned 17 - 3 = 14 phrases from her. She has been teaching it 2 phrases a week, so she has had it 14 / 2 = 7 weeks. There are 7 days in a week, so Georgina has had the parrot for 7 * 7 = 49 days.

We have a question: Rosie runs 6 miles per hour. She runs for 1 hour on Monday, 30 minutes on Tuesday, 1 hour on Wednesday, and 20 minutes on Thursday. If she wants to run 20 miles for the week, how many minutes should she run on Friday?
And an answer: 30
So how you got the answer?
On Monday and Wednesday, Rosie runs 6 * 1 = 6 miles. On Tuesday, Rosie runs 6 * (30 minutes / 60 minutes) = 3 miles. On Thursday, Rosie runs 6 * (20 minutes / 60 minutes) = 2 miles. So far this week Rosie has run 6 + 3 + 6 + 2 = 17 miles. To reach her goal, she must run 20 - 17 = 3 miles on Friday. Thus, she should run for 6 / 3 = .5 hour which is 30 minutes.