[Question]Jamal works at a library shelving books. He has a cart full of books to put away in different sections. In the history section, he shelves 12 books. In the fiction section, he shelves 19 books. In the children’s section, he shelves 8 books but finds 4 that were left in the wrong place that he adds to his cart to shelve elsewhere. He still has 16 books to shelve. How many books did he start with in the cart?
[Answer]Jamal started with B books in the cart. He had B - 12 books after the history section. He had B - 12 - 19 = B - 31 books after the fiction section. He had B - 31 - 8 + 4 = B - 35 books after the children’s section. He still had B - 35 = 16 books to shelve. Thus, he started with B = 16 + 35 = 51 books in the cart. The answer is 51.
Q: Saheed made four times as much money as Kayla. Kayla made $30 less than Vika. Vika made $84. How many dollars did Saheed make?
A: Kayla made $30 less than Vika = $84 - 30 = 54. Saheed made 4 * Kayla = 4 * 54 = 216. The answer is 216.
Question: Andy has 4 times as many white socks as he has black socks. If he loses half his white socks, how many more white socks does he still have than black socks if he has 6 black socks?
Answer: Andy has 6 x 4 = 24 white socks. He loses 24 / 2 = 12 white socks. He still has 12 - 6 = 6 white socks more than black socks. The answer is 6.
[Question]Leo's assignment was divided into three parts. He finished the first part of his assignment in 25 minutes. It took him twice as long to finish the second part. If he was able to finish his assignment in 2 hours, how many minutes did Leo finish the third part of the assignment?
[Answer]It took Leo 25 x 2 = 50 minutes to finish the second part of the assignment. Leo finished the first and second parts of the assignment in 25 + 50 = 75 minutes. He finished the entire assignment in 60 x 2 = 120 minutes. Therefore, it took Leo 120 - 75 = 45 minutes to finish the third part of the assignment. The answer is 45.
Q: The total distance between 2 towns is 200 miles. Roger and his friend drove 1/4 of the total distance, taking 1 hour to do so. They take lunch for another 1 hour and then drove the remaining distance going at the same speed as before. What's the total amount of time, in hours, Roger and his friend took to travel between the two towns?
A: When they covered 1 / 4 of the total distance, they were 1 / 4 * 200 = 50 miles away from the starting point. The total distance remaining is 200 - 50 = 150 miles. If they took 1 hour to travel 50 miles, their speed was 50 / 1 = 50 miles per hour. If Roger was driving at 50 miles per hour, then the total time it took him to travel 150 miles is 150 / 50 = 3 hours. The total amount of time taken for the whole journey is 3 + 1 + 1 = 5 hours. The answer is 5.
Question: Mia has 4 times as many shells as David. Ava has 20 more shells than Mia. Alice has half the number of shells Ava has. If David has 15 shells, what the total number of conch shells they all have?
Answer:
If David has 15 shells, then Mia has 4 * 15 = 60 shells. Ava has 20 more shells than Mia, so that is 60 + 20 = 80 shells. Alice has 1 / 2 the number of shells Ava has, which is 1 / 2 * 80 = 40 shells. The total number of shells all of them have is 15 + 60 + 80 + 40 = 195 shells. The answer is 195.