Q: Seven parrots and some crows are perched on a tree branch. There was a noise and the same number of parrots and crows flew away. If only 2 parrots and 1 crow are left on the tree branch now, how many birds were perched on the branch to begin with?
A: The number of parrots that flew away after the noise is 7 - 2 = 5. The same number of crows (5) flew away leaving 1 crow so there were 5 + 1 = 6 crows to begin with. The total number of crows and parrots was 7 + 6 = 13. The answer is 13.
Question: Janna sleeps 7 hours each day during weekdays and 8 hours each day during weekends. How many hours does she sleep in a week?
Answer: She sleeps 7 * 5 = 35 hours on weekdays. She sleeps 8 * 2 = 16 hours on weekends. 35 + 16 = 51 hours is the amount of time she sleeps in a week. The answer is 51.
[Question]If 2 machines in a factory make 10 cell phones each minute, how many machines would it take to make 50 cell phones a minute?
[Answer]First, we need to determine how many cell phones each machine makes per minute. We do this by performing 10 / 2 = 5 cell phones each minute per machine. Next, we determine how many machines are needed in total by dividing the desired outcome of 50 by the rate of production of an individual machine, finding 50 / 5 = 10 machines needed. The answer is 10.
Q: Hilary is collecting her toenails in a jar to gross out her sister. She can fit 100 toenails in the jar, unless they are from her two big toes, which are twice as big as the rest. She has already filled it with 20 big toenails and 40 regular toenails. How many regular toenails can she fit into the remainder of the jar?
A: The 20 big toenails take up as much space as 40 regular toenails because 20 x 2 = 40. She has filled up 80 toenails worth because 40 + 40 = 80. She can fit 20 regular toenails in the jar because 100 - 80 = 20. The answer is 20.
Question: Cynthia harvested 67 potatoes from her garden. After washing them, she cut 13 of them into wedges. She then halved the remaining potatoes and made french fries with one half, and potato chips with the other half. If one potato can be cut into 8 wedges or make 20 potato chips, how many more potato chips than wedges did Cynthia make?
Answer: Cynthia was left with 67 - 13 = 54 potatoes after making wedges. She used 54 / 2 = 27 potatoes to make potato chips. Cynthia made 13 x 8 = 104 wedges. She made 27 x 20 = 540 potato chips. Cynthia made 540 - 104 = 436 more potato chips than wedges. The answer is 436.
Q: 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?
A:
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.