Question: The fifth grade class at Rosa Parks Elementary School is holding a food drive. Half the students in Ms. Perez's class collected 12 cans each, two students didn't collect any, and the remaining 13 students students each collected 4 cans. If Ms. Perez's class has 30 students, how many cans did they collect total?
Answer: Then find how many students in Ms. Perez's class collected 12 cans each: 30 students / 2 = 15 students. Then find how many cans the students who collected 12 cans each collected in total: 15 students * 12 cans / student = 180 cans. Then find how many cans the students who collected 4 cans each collected in total: 13 students * 4 cans / student = 52 cans. Then add both amounts of cans to find the total: 180 cans + 52 cans = 232 cans. The answer is 232.
[Question]A colony of bees can contain up to 80000 individuals. In winter they are more exposed to death, and if the winter is really cold the bees can begin to die slowly. If the colony starts to lose 1200 bees per day, how many days will pass until the number of bees in the colony reaches a fourth of its initial number?
[Answer]A fourth of the initial number of bees is 80000 bees / 4 = 20000 bees. The number of bees that has to die is 80000 bees 20000 bees = 60000 bees. For the colony to reach a fourth of its population, 60000 bees 1200 bees / day = 50 days have to pass. The answer is 50.
Q: Regina has a farm with animals. She has 20 cows and four times more pigs. Someone told her, that she could sell all the animals and earn $400 for each pig and $800 for each cow. How much money would she earn if she would sell all the animals from the farm?
A: Regina has 4 pigs / cow * 20 cows = 80 pigs. She could sell the pigs for 80 pigs * $400 / pig = $32000. For the cows Regina would get 20 cows * $800 / cow = $16000. In total Regina would earn $16000 + $32000 = $48000. The answer is 48000.
Question: Nate is reading a 400-page book. He finished reading 20% of the book. How many pages does he need to read to finish the book?
Answer: Nate had read 400 x 20 / 100 = 80 pages. So, he still needs to read 400 - 80 = 320 pages to finish the book. The answer is 320.
[Question]There are 50 marbles in a box which has a mixture of white, red and blue marbles. There were originally 20 white marbles and an equal number of red and blue marbles. Jack removes a number of marbles equal to double the difference between the number of white marbles and the number of blue marbles. How many marbles are left in the box?
[Answer]20 of 50 marbles are white so there are 50 - 20 = 30 red and blue marbles. The number of red marbles and blue marbles is the same, so there are 30 / 2 = 15 of each color. The difference between the number of white marbles and blue marbles is 20 - 15 = 5. Double the difference is 5 * 2 = 10 marbles. 10 marbles are removed to leave 50 - 10 = 40 marbles. The answer is 40.
[Question]You draw a rectangle that is 7 inches wide. It is 4 times as long as it is wide. What is the area of the rectangle?
[Answer]
The length of the rectangle is 4 * 7 inches = 28 inches. The area of the rectangle is 7 inches * 28 inches = 196 square inches. The answer is 196.