[Question]A survey was conducted by a school to the parents about their children's online class experience. Fifteen percent of the respondents rated Excellent; 60% rated Very Satisfactory; 80% of the remaining respondents rated Satisfactory and the rest rated Needs Improvement. If 120 parents answered the survey, how many of them rated Needs Improvement?
[Answer]The total percentage of those who rated Excellent or Very Satisfactory is 15% + 60% = 75%. Seventy - five percent of the parents is 120 x 75 / 100 = 90. Hence, 120 - 90 = 30 students rated either Satisfactory or Needs Improvement. A total of 30 x 80 / 100 = 24 parents rated Satisfactory. Therefore, 30 - 24 = 6 parents rated Needs Improvement. The answer is 6.
Q: Asha has to buy some gifts but has no money. She decides to borrow $20 from her brother, $40 from her father, $30 from her mother and is gifted $70 by her granny. She adds this to her savings of $100 and goes out to Target to get what she wanted. If she spent 3/4 of the money, how much money did she remain with?
A: With the amount borrowed from her family, she has a total of 20 + 40 + 30 = 90 dollars. With the amount gifted from her granny, she has 70 + 90 = 160 dollars. She adds this to her savings, ending up with a total of 160 + 100 = 260 dollars. She spends 3 / 4 of this money, which is 3 / 4 * 260 = 195 dollars. The total she remains with is 260 - 195 = 65 dollars. The answer is 65.
Question: Smaug the dragon hoards 100 gold coins, 60 silver coins, and 33 copper coins. If each silver coin is worth 8 copper coins, and each gold coin is worth 3 silver coins, what is the total value of Smaug's hoard expressed as a number of copper coins?
Answer: First figure out how many silver coins the 100 gold coins are worth by multiplying the number of gold coins by the exchange rate between gold and silver: 100 gold * 3 silver / gold = 300 silver. Then add the value of the gold in silver to the number of silver coins to find the total value of the gold and silver expressed in silver coins: 300 silver + 60 silver = 360 silver. Now multiply that value by the exchange rate between silver and copper to express its value in terms of copper coins: 360 silver * 8 copper / silver = 2880 copper. Then add the value of the gold and silver expressed in copper coins (the value from the last step) to the number of copper coins to find the total value of the hoard: 2880 + 33 = 2913. The answer is 2913.
[Question]To increase her water intake to the recommended level by her doctor, Happy has to take 40% more cups of water than she takes now. If she is currently drinking 15 cups of water every week, what's the recommended number of cups per week?
[Answer]Happy has to take 40 / 100 * 15 = 6 more cups of water than she takes currently to reach the recommended water intake levels by her doctor. In total, she is supposed to drink 6 + 15 = 21 cups of water every week. The answer is 21.
Q: Bailey is making a rectangle out of a 100cm length of rope he has. If the longer sides of the rectangle were 28cm long, what is the length of each of the shorter sides?
A: The longer sides are 2 in number so their total length of 2 * 28cm = 56cm. The rest of the length making up the short sides is 100 - 56 = 44 cm. There are two equal short sides so each one is 44 / 2 = 22cm. The answer is 22.
Question: Belinda’s dog is missing, so she made 200 flyers to distribute around town with the help of her friends. Ryan passed out 42 flyers, Alyssa passed out 67, Scott passed out 51 and Belinda passed out the rest. What percentage of the flyers did Belinda pass out?
Answer:
The total number of flyers Belinda’s friends passed out was 42 by Ryan + 67 by Alyssa + 51 by Scott = 160 flyers. Belinda passed out 200 total flyers – 160 flyers passed out by friends = 40 flyers. To express this as a decimal, divide Belinda’s 40 flyers / 200 total flyers = 0.20. Belinda passed out 0.20 x 100% = 20% of the flyers. The answer is 20.