Question: Greg has lent his sister Tessa money on several occasions. Greg writes down all of his sister's debts in a notebook, the first time he lent her $40. A week later, Tessa paid him back half of her debt. A few days later she asked him for $10 more. How much does Tessa still owe Greg?
Answer: After Greg lent her $40, Tessa paid him back 40 / 2 = $20. So Tessa's debt was 40 - 20 = $20. Finally, she asked for $10 more, leaving the debt at 20 + 10 = $30. The answer is 30.
[Question]This evening in the nighttime sky over Texas, Mars can be seen until 12:10 AM. Jupiter does not appear until 2 hours and 41 minutes later, and Uranus does not appear until 3 hours and 16 minutes after Jupiter makes its first appearance. How many minutes after 6:00 AM does Uranus first appear in the evening sky over Texas this evening?
[Answer]Jupiter appears 2 hours and 41 minutes after 12:10 AM, which can be calculated in two parts;. 2 hours after 12:10 AM is 12:10 + 2:00 = 2:10 AM. And an additional 41 minutes after 2:10 AM is 2:10 + 0:41 = 2:51 AM. Uranus appears 3 hours and 16 minutes after 2:51 AM, which can be calculated in two parts:. 3 hours after 2:51 AM is 2:51 + 3:00 = 5:51 AM. And 16 minutes after 5:51 AM is 5:51 + 0:16 = 5:67 AM = 6:07 AM. Thus, 6:07 AM is 7 minutes after 6:00 AM. The answer is 7.
Q: Tom can type 90 words a minute. A page is 450 words. How long would it take him to type out 10 pages?
A: He can type out 1 page in 450 / 90 = 5 minutes. So it would take 5 * 10 = 50 minutes. The answer is 50.
Question: Kylie and Kayla pick apples together and take home 340 apples total. If Kayla picked 10 more than 4 times the amount of apples that Kylie picked, how many apples did Kayla pick?
Answer: Let x be the number of apples Kylie picked. Kayla picked 10 + 4x apples. 340 = x + (10 + 4x). 340 = 5x + 10. 330 = 5x. x = 66 apples. Kayla picked 10 + 4(66) = 274 apples. The answer is 274.
[Question]Angel has written letters to all of her pen pals and is putting all of the letters in envelopes. Most of the letters are put into large envelopes and the remaining 20 letters are put into small envelopes. The large envelopes each contain 2 letters each. If Angel has written a total of 80 letters, how many large envelopes did she use?
[Answer]As some of the letters are in small envelopes, there must be 80 total letters 20 letters in small envelopes = 60 letters in large envelopes. Angel therefore used 60 letters / 2 letters per large envelope = 30 large envelopes. The answer is 30.
[Question]Andy needs to drive from Salt Lake City to Los Angeles. The drive from Salt Lake City to Las Vegas is 420 miles. The drive from Las Vegas to Los Angeles is 273 miles. He wants to make the drive in 11 hours. What's the average minimum speed that Andy needs to drive to reach Los Angeles in 11 hours?
[Answer]
The total distance of the trip is 420 + 273 = 693 miles. To make the trip Andy must drive 693 miles / 11 hours = 63 miles per hour. The answer is 63.