[Question]You can lower the price by 20% if you buy more than fifteen units of iPhone cases. If you pay $500 to buy 18 units, what is the original price?
[Answer]If you buy 18 units, the percentage of the total price drops to 100% - 20% = 80%. If 80% is equal to $500, then 100% is equals 100% / 80% * $500 = $625. The answer is 625.
Q: Carol sells tickets for an exhibition. During three days she sold tickets worth $960. One ticket costs $4. How many tickets on average did she sell during one of these three days?
A: Carol sold 960 / 4 = 240 tickets during three days. So in one day, she sold on average 240 / 3 = 80 tickets. The answer is 80.
Question: Bob and Johnny have a leaf raking business. They charge $4 for each bag of leaves they rake. On Monday they raked 5 bags of leaves. On Tuesday they raked 3 bags of leaves. On Wednesday, they counted their money and found they had $68 for all three days. How many bags of leaves did they rake on Wednesday?
Answer: Combining Monday and Tuesday, they raked 5 + 3 = 8 bags of leaves. They earned 8 * $4 = $32 for the first two days. O for Wednesday's work they earned $68 - $32 = $36. Thus, they raked $36 / $4 = 9 bags of leaves on Wednesday. The answer is 9.
[Question]Rubble has $15 in his pocket and he needs to buy 2 notebooks and 2 pens. Each notebook cost $4.00 meanwhile each pen cost $1.50. How much money will be left from Rubble after the purchase?
[Answer]The total cost of two notebooks is $4.00 x 2 = $8.00. The total cost of two pen $1.50 x 2 = $3.00. So, the total amount Rubble spent for all the stuff was $8.00 + $3.00 = $11.00. Therefore, Rubble was left off with $15.00 - $11.00 = $4.00. The answer is 4.
Q: Pat's stick is 30 inches long. He covers 7 inches of the stick in dirt. The portion that is not covered in dirt is half as long as Sarah’s stick. Jane’s stick is two feet shorter than Sarah’s stick. How many inches long is Jane’s stick?
A: 30 - 7 = 23 inches of Pat’s stick is not covered in dirt. Sarah’s stick is 23 * 2 = 46 inches long. Jane’s stick is 12 * 2 = 24 inches shorter than Sarah’s stick. Jane’s stick is 46 - 24 = 22 inches long. The answer is 22.
Question: Carla is taking attendance for her sixth-grade class. She knows that 2 students are in the restroom, and one less than three times that number of students are absent. If there are four rows with six desks each that are all 2/3 full, how many students does Carla teach, including the ones in and out of the classroom?
Answer:
First find the number of absent students: 2 students * 3 - 1 = 5 students. Now find the number of students in each row of desks: 6 desks / row * 2 students / 3 desks = 4 students / row. Now find the number of students in all the rows: 4 rows * 4 students / row = 16 students. Now add the students that are absent or in the bathroom: 16 students + 2 students + 5 students = 23 students. The answer is 23.