Question: Jenna is adding black dots to a bunch of white blouses. Each blouse gets 20 dots, and each dot takes 10 ml of black dye. How many 400-ml bottles of dye does Jenna need to buy to dye 100 blouses?
Answer: First find the amount of dye each blouse takes: 20 dots / blouse * 10 ml / dot = 200 ml / blouse. Then multiply the dye used per blouse by the number of blouses to find the total amount of dye used: 200 ml / blouse * 100 blouses = 20000 ml. Then divide the amount of dye needed by the amount of dye per bottle to find the number of bottles needed: 20000 ml / 400 ml / bottle = 50 bottles. The answer is 50.
[Question]A bird is building a nest from twigs. The bird has put twelve twigs together already to make a circle. For each twig it placed into the circle, it wants to weave in six more twigs to fill out the nest. It knows a tree that has dropped a third of the twigs it needs. How many twigs will the bird still need to find to finish its nest?
[Answer]The bird wants 12 * 6 = 72 twigs to add to the nest. It knows a tree that has dropped 72 * 1 / 3 = 24 twigs. Thus, the bird will still need 72 - 24 = 48 twigs to finish the nest. The answer is 48.
Q: Mr. Smith has incurred a 2% finance charge because he was not able to pay on time for his balance worth $150. If he plans to settle his balance today, how much will Mr. Smith pay?
A: The finance charge amounts to $150 x 2 / 100 = $3. Thus, Mr. Smith will pay a total of $150 + $3 = $153. The answer is 153.
Question: A busy port has 4 cruise ships and twice as many cargo ships. The number of sailboats is 6 more than the cargo ships and seven times more than fishing boats. How many vessels are there on the water?
Answer: There are 4 x 2 = 8 cargo ships. There are 8 + 6 = 14 sailboats. There are 14 / 7 = 2 fishing boats. There are 4 + 8 + 14 + 2 = 28 vessels on the water. The answer is 28.
[Question]One-third of a class of 39 students took part in a math competition. How many students did not participate in the competition?
[Answer]Since one - third of the class participated, there are 39 * 1 / 3 = 13 students who participated in the competition. This means that 39 – 13 = 26 students did not participate. The answer is 26.
[Question]New York recorded 5000 new coronavirus cases on a particular week. In the second week, half as many new coronaviruses cases as the first week was recorded by the state. In the third week, 2000 more cases were recorded in the state. What is the total number of recorded new coronaviruses in the state after the three weeks?
[Answer]
If there were 5000 new cases on the first week, the total for the second week is 1 / 2 * 5000 cases = 2500 cases. The total number of new coronavirus cases in the three weeks is 2500 cases + 5000 cases + 2000 cases = 9500 cases. The answer is 9500.