We have a question: Rachel makes $12.00 as a waitress in a coffee shop. In one hour, she serves 20 different people and they all leave her a $1.25 tip. How much money did she make in that hour?
And an answer: 37
So how you got the answer?
She served 20 people and they all tipped her $1.25 so she made 20 * 1.25 = $25.00 in tips. She makes $12.00 an hour and she made $25.00 in tips so she made 12 + 25 = $37.00 in one hour.

We have a question: The music festival of Bassompierre begins tonight with a concert by the string orchestra "PIANISSIMO". The ticket price for adults is $26; for children, the price is half. The show starts at 9 pm and goes very well. At about 11:00 pm, the concert organizer made his accounts. There were 183 adults and 28 children who attended the show. What was the total revenue of the concert?
And an answer: 5122
So how you got the answer?
The total revenue from the adults is 183 x $26 = $4758. The ticket price for children is $26 / 2 = $13. The total revenue from the children is 28 x $13 = $364. The total revenue of the concert is $4758 + $364 = $5122.

We have a question: Mrs. Smith wanted to buy wears worth $500. She went to a boutique with the $500 but by the time she had picked out everything she liked, she realized that she would need two-fifths more money than she had. If the shop owner gave her a discount of 15%, how much more money will she still need?
And an answer: 95
So how you got the answer?
Two fifths of $500 is (2 / 5) * $500 = $200. She needed $200 more than $500 which is $200 + $500 = $700. 15% of $700 is (15 / 100) * $700 = $105. She was given a $105 discount so she has to pay $700 - $105 = $595. She would still need $595 - $500 = $95.