Q: Harrison Elementary School is overcrowded with 1590 students, so 40% of the students are going to move to a new school. There are 3 grade levels, and each grade level needs one 20-person advanced class and the rest of the students divided evenly into 6 additional classes. How many students will there be in each normal class at the new school?
A: First find how many students go to the new school: 1590 students * .4 = 636 students. Then divide that number by 3 to find how many students are at each grade level: 636 students / 3 grades = 212 students / grade. Then subtract the 20 students in the gifted class: 212 students - 20 students = 192 students. Then divide that number by 6 to find the number of students in each other class: 192 students / 6 classes = 32 students / class. The answer is 32.

Q: The bakery makes 3 batches of baguettes a day. Each batch has 48 baguettes. After the first batch came out, he sold 37. After the second batch, he sold 52. After the third batch he sold 49. How many baguettes are left?
A: He makes 3 batches of baguettes a day, 48 per batch so he makes 3 * 48 = 144. He sells 37, then 52 then 49 baguettes for a total of 37 + 52 + 49 = 138. He had 144 to sell and he sold 138 so he has 144 - 138 = 6 left over. The answer is 6.

Q: The coach of a football team asked his players to do six laps of the field. The field is in the shape of a rectangle of length 100 m and width 50 m. What is the distance each player will run, in meters?
A:
One lap corresponds to the perimeter of a rectangle of 100 m length and 50 m width: 2 * 100 + 2 * 50 = 300 metres. Each player has to do six turns of the field, so runs 6 * 300 = 1800 meters. The answer is 1800.