Question: There are 500 students in a local high school. 40 percent are juniors. 70 percent of juniors are involved in sports. How many juniors are involved in sports?
Answer: Juniors:500(.40) = 200. Juniors in sports:200(.70) = 140 students. The answer is 140.
[Question]As firefighters, Doug, Kai, and Eli have been putting out a lot of fires over the week. Doug has put out 20 fires for the week and Kai has put out 3 times more than Doug. Meanwhile, Eli has put out half the number of fires Kai was able to. How many fires have they put out for the entire week?
[Answer]Kai has put out 20 x 3 = 60 fires for the week. Eli has put out 60 / 2 = 30 fires for the week. Therefore, the total amount of fires they have put out over the entire week was 20 + 60 + 30 = 110. The answer is 110.
Q: A notebook costs three times as much as a pen. If a pen costs $1.50, how much will Lyle pay for 4 notebooks?
A: A notebook costs $1.50 x 3 = $4.50. So Lyle will pay $4.50 x 4 = $18 for the 4 notebooks. The answer is 18.
Question: All 20 of Grant’s baby teeth have fallen out and he has a total of $54 from the tooth fairy. Every time he lost a tooth, he put it under his pillow for the tooth fairy, except for one that he dropped on the way home from school and another he swallowed accidentally. The tooth fairy left Grant $20 when he lost his first tooth. How much did the tooth fairy leave him per tooth after his first tooth, assuming equal money exchanged for each tooth thereafter?
Answer: Grant’s 20 baby teeth – 1 tooth he dropped – 1 he swallowed = 18 teeth left for the tooth fairy. We aren’t counting his first tooth, so 18 teeth – 1 first tooth = 17 teeth. Grant received $54 - $20 = $34 in total for all the teeth after the first. So he received $34 / 17 teeth = $2 for each tooth after his first tooth. The answer is 2.
[Question]Maddox and Theo both bought 3 Polaroid Cameras, each sold at $20 per camera from Amazon, and decided to sell them on eBay. Maddox sold his cameras at $28 each, while Theo sold his cameras at $23 each. How much more profit did Maddox get from the sale of his cameras than Theo?
[Answer]The total cost of buying 3 cameras from Amazon for both Maddox and Theo was 3 * $20 = $60. Maddox sold his cameras at $28 each, for a total of $28 * 3 = $84. Maddox made a profit of $84 - $60 = $24 from the sale of his cameras. Theo sold his cameras on eBay for $23 * 3 = $69. Theo made a profit of $69 - $60 = $9. Maddox made $24 - $9 = $15 more profit than Theo from the sale of his cameras. The answer is 15.
[Question]The difference between the ages of two friends is 2 years. The sum of their ages is 74 years. Find the age of the older friend.
[Answer]
Let X be the age of the older friend. The younger friend is X - 2 years old. So, the age of both is X + (X - 2) = 74. X + X = 74 + 2. 2 * X = 76. Then, the older friend is X = 38 years old. The answer is 38.