Question: Maria wants to buy a brand new bike. The retail price at the bike shop stands at $600. She saved $120 toward the purchase. As this was not enough, she asked her mother to give her the remaining amount. Her mother offered her $250 and told her that she needs to earn the rest working during the holidays. How much money must Maria earn to be able to buy the bike she wants?
Answer: Maria has $120 and received $250 from her mother. So she has 120 + 250 = $370. As the price of the bike stands at $600, Maria needs 600 – 370 = $230 more to buy the bike. The answer is 230.
[Question]Madeline spends 18 hours a week in class. She spends 4 hours per day working on homework. She spends 8 hours per day sleeping. She works part-time 20 hours per week. How many hours left over does Madeline have?
[Answer]Madeline spends 4 * 7 = 28 hours on homework. She spends 8 * 7 - 56 hours sleeping. Therefore, she is busy 28 + 18 + 56 + 20 = 122 hours per week. There are 7 * 24 = 168 hours per week. Thus, Madeline has 168 - 122 = 46 hours left over. The answer is 46.
Q: Last week, the price of a movie ticket was $100. This year the price is down by 20%. What's the new price of the movie ticket?
A: The price of the book is down by: 100 * 0.2 = $20. So the new price of the movie ticket is: 100 - 20 = $80. The answer is 80.
Question: Phyllis has two gardens. In the first garden, she has 20 plants and 10% are tomato plants. In the second garden, she has 15 plants and 1/3 of these plants are tomato plants. What percentage of all the plants in her two gardens are tomato plants?
Answer: The first garden has 2 tomato plants because 20 x .1 = 2. The second garden has 5 tomato plants because 15 x (1 / 3) = 5. She has 7 tomato plants in total because 2 + 5 = 7. She has 35 plants in total because 20 + 15 = 35. The proportion of tomato plants is .2 because 7 / 35 = .2. The percentage of tomato plants is 20 because .2 x 100 = 20. The answer is 20.
[Question]Carly collected 7 starfish with 5 arms each and one seastar with 14 arms. How many arms do the animals she collected have in total?
[Answer]First find the total number of starfish arms: 7 starfish * 5 arms / starfish = 35 arms. Then add the number of seastar arms to find the total number of arms: 35 arms + 14 arms = 49 arms. The answer is 49.
[Question]Kiki made 10 cucumber sandwiches and 8 egg sandwiches for the tea party. Each cucumber sandwich was cut into 4 triangles. Each egg sandwich was cut into 2 rectangles. If her guests ate 28 triangles and 12 rectangles, how many slices of bread did they eat?
[Answer]
The guests ate 28 / 4 = 7 cucumber sandwiches. The guests ate 12 / 2 = 6 egg sandwiches. They ate a total of 7 + 6 = 13 sandwiches. They ate a total of 13 x 2 = 26 slices of bread. The answer is 26.