[Question]Mike is feeding the birds at the park. He counts out the seeds as he throws them. He throws 20 seeds to the birds on the left. He throws twice as much to the bigger group of birds on the right. Some more birds flutter over to join the others for lunch and Mike throws 30 more seeds for them. If Mike has 30 seeds left to feed the last of the birds, how many seeds did Mike start with?
[Answer]Mike started by throwing 20 seeds to the birds and then threw twice as many, 20 + 20(2) = 20 + 40. That totals to 20 + 40 = 60 seeds. He also threw 30 other seeds and had 30 left over, which means he started with 60 + 30 + 30 = 120 seeds. The answer is 120.
Q: It starts raining at 7:00 and pours heavily until its stops at 17:00 on a particular day. On the second day, the rain takes 2 more hours than it took on the first day to stop. On the third day, the rain pours for twice the amount of time it took on the second day. Calculate the total time it was raining in the three days.
A: On the first day, it rained for 17:00 - 7:00 = 10 hours. On the second day, it 10 hours + 2 hours = 12 hours for the rain to stop. It rained for 2 * 12 hours = 24 hours on the third day. In the three days, it was raining for 24 hours + 12 hours + 10 hours = 46 hours. The answer is 46.
Question: Sara's sister has 4 small notebooks in her closet. Last summer she ordered 6 more notebooks and then lost 2. How many notebooks does Sara's sister have now?
Answer: Sara's sister has 4 + 6 = 10 notebooks. After she loses 2, she will have: 10 - 2 = 8 notebooks. The answer is 8.
[Question]Ian used a grocery delivery app to have his groceries delivered. His original order was $25 before delivery and tip. He noticed that 3 items changed on his order. A $0.99 can of tomatoes was replaced by a $2.20 can of tomatoes, his $1.00 lettuce was replaced with $1.75 head of lettuce and his $1.96 celery was replaced with celery that cost $2.00. Delivery and tip came to a total of $8.00. How much is his new bill now, with the food substitutes and delivery/tip?
[Answer]He ordered a can of tomatoes for $0.99 but they subbed with one that cost $2.20 for a difference of 2.20 - .99 = $1.21. He ordered lettuce for $1.00 but they subbed with one that cost $1.75 for a difference of 1.75 - 1.00 = $0.75. His celery for $1.96 but they subbed with one that cost $2.00 for a difference of 2.00 - 1.96 = $0.04. That's an additional charge of 1.21 + .75 + .04 = $2.00 in groceries. His additional charges of $2.00 and the delivery / tip of $8.00 add 2 + 8 = $10.00 to the order. His original order was $25 and they added $10.00 so his new order is 25 + 10 = $35.00. The answer is 35.
Q: Colleen is making a batch of 48 cookies. She's going to add 108 chocolate chips and one-third as many M&Ms to the whole batch. What are the average number of chocolate pieces in each cookie?
A: First find the total number of M&Ms: 108 chocolate chips / 3 chocolate chips / 1 M&M = 36 M&Ms. Then add that number to the number of chocolate chips to find the total number of pieces of chocolate: 36 M&Ms + 108 chocolate chips = 144 chocolates. Then divide the total number of chocolates by the number of cookies to find the number of pieces of chocolate per cookie: 144 chocolates / 48 cookies = 3 chocolates / cookie. The answer is 3.
Question: Harry is joining a marathon that's why he practices and varies his workouts from day to day. He ran 10 meters per hour on Monday. From Tuesday to Thursday he ran 50% faster than on Monday. Then on Friday, he ran 60% faster than he ran on Thursday. How fast did Harry run on Friday?
Answer:
Harry ran 10 x 50 / 100 = 5 meters per hour faster on Tuesday to Wednesday. So he ran 10 + 5 = 15 meters per hour from Tuesday to Thursday. Then on Friday, he ran 15 x 60 / 100 = 9 meters per hour more. Therefore, he ran 15 + 9 = 24 meters per hour on Friday. The answer is 24.