Question: Bill is trying to control the pests in his garden. Each spider he introduces eats 7 bugs, and each time he sprays the garden he reduces the total bug population to 80% of what it was previously. If the garden has 400 bugs to start, and Bill sprays once and introduces 12 spiders, how many bugs are left?
Answer: First find the total bug population after spraying: 80% * 400 bugs = 320 bugs. Then find the total number of bugs each spider eats: 12 spiders * 7 bugs / spider = 84 bugs. Then subtract that number from the number of bugs left after spraying to find final number of bugs: 320 bugs - 84 bugs = 236 bugs. The answer is 236.
[Question]In the baking contest, three times as many people voted for the unicorn cake compared to the witch cake, and the number of votes for the dragon cake was 25 more than the number of votes for the witch cake. If 7 people voted for the witch cake, how many votes were cast total?
[Answer]First find the number of votes for the unicorn cake: 7 votes * 3 = 21 votes. Then find the number of votes for the dragon cake: 25 votes + 7 votes = 32 votes. Then add the number of votes for each cake to find the total number of votes: 21 votes + 32 votes + 7 votes = 60 votes. The answer is 60.
Q: A car uses 20 gallons of gas to travel 400 miles. Mr. Montero's car has 8 gallons in it. How many more gallons of gas does he need to travel 600 miles, back and forth?
A: Mr. Montero is traveling a total distance of 600 miles + 600 miles = 1200 miles. There are 1200 miles / 400 miles = 3 sets of 400 miles in 1200 miles. So Mr. Montero needs 20 gallons / set x 3 sets = 60 gallons in all. Since his car has 8 gallons already, then he needs to add 60 gallons - 8 gallons = 52 gallons more. The answer is 52.
Question: There are three goldfish and ten platyfish in a fish tank. Each goldfish plays with ten red balls, while each platyfish plays with five white balls. What is the total number of balls in the fish tank?
Answer: If there are 3 goldfish, and each is playing with ten red balls, then the number of red balls in the tank is 3 * 10 = 30. There are also ten platyfish playing with 5 white balls, there are 10 * 5 = 50 white balls. The total number of red and white balls in the fish tank is 50 + 30 = 80. The answer is 80.
[Question]May can knit 3 scarves using one yarn. She bought 2 red yarns, 6 blue yarns, and 4 yellow yarns. How many scarves will she be able to make in total?
[Answer]May will be able to make 2 x 3 = 6 red scarves. She will be able to make 3 x 6 = 18 blue scarves. And she will be able to make 4 x 3 = 12 yellow scarves. Therefore the total scarves she can make is 12 + 18 + 6 = 36. The answer is 36.
[Question]TreShawn's mom needs to order pizza for her son and his two friends. She knows that TreShawn always eats 1/2 a pizza. His friend Michael eats 1/3 of a pizza and his other friend LaMar eats 1/6 of a pizza. How many pizzas does she need to order?
[Answer]
Half a pizza is the same as 3 / 6 of a pizza. 1 / 3 of a pizza is the same as 2 / 6 of a pizza. 3 / 6 of a pizza plus 2 / 6 of a pizza plus 1 / 6 of a pizza equals 6 / 6 of a pizza. Therefore, she needs to buy one pizza because 6 / 6 equals 1. The answer is 1.