Question: Derek was 6 years old when he had three times as many dogs as cars. Ten years later, after selling some of his dogs and buying 210 more cars, the number of cars became twice the number of dogs. How many dogs does Derek have now if he had 90 dogs when he was six years old?
Answer: At six years old, with three times as many dogs as cars, Derek had 90 / 3 = 30 cars. Ten years later, after buying 210 more cars, Derek has 210 + 30 = 240 cars. Since the number of cars is twice as many as the number of dogs, Derek currently has 240 / 2 = 120 dogs. The answer is 120.
[Question]Liezl prepared four sets of 2-dozen paper cups for her daughter's birthday party. If 5 cups were damaged and 30 were not used, how many paper cups were used?
[Answer]Since 1 dozen is equal to 12 then 2 dozens of cups is equal to 2 x 12 = 24 cups. So, Liezl prepared a total of 24 cups x 4 sets = 96 paper cups. A total of 5 + 30 = 35 paper cups were not used. Hence, 96 - 35 = 61 paper cups were used. The answer is 61.
Q: Randy, Peter, and Quincy all drew pictures. Peter drew 8 pictures. Quincy drew 20 more pictures than Peter. If they drew 41 pictures altogether, how many did Randy draw?
A: Quincy drew 20 + 8 = 28 pictures. Quincy and Peter drew 28 + 8 = 36 pictures in total. Randy drew 41 - 36 = 5 pictures. The answer is 5.
Question: In the park, the first rose bush has 12 red flowers. The second rose bush has 18 pink flowers. The third rose bush has 20 yellow flowers. The fourth rose bush has 8 orange flowers. For her vase, Lorelei picks 50% of the red roses, 50% pink roses, 25% of the yellow roses, and 25% orange roses. How many roses are in her vase?
Answer: The number of red roses Lorelei picks is 12 x 50% = 6 roses. The number of pink roses Lorelei picks is 18 x 50% = 9 roses. The number of yellow roses she picks is 20 x 25% = 5 roses. The number of orange roses she picks is 8 x 25% = 2 roses. The total number of roses in her vase is 6 + 9 + 5 + 2 = 22 roses. The answer is 22.
[Question]A gym charges its members $18 twice a month. If it has 300 members how much does it make a month?
[Answer]Each person is charged 18 * 2 = $36 per month. So they get 36 * 300 = $10,800 per month. The answer is 10800.
[Question]Beatrice is shopping for a new TV. First she looks at 8 TVs at one store in person. Then she looks at three times as many TVs at an online store. She looks at more TVs on an auction site online. If Beatrice looked at 42 TVs in all, how many did look at on the auction site?
[Answer]
Beatrice looked at 3 x 8 TVs at an online store = 24 TVs. She looked at 8 TVs in person + 24 TVs online = 32 TVs. Beatrice looked at 42 TVs in all - the 32 she looked at = 10 TVs she looked at on an auction site. The answer is 10.