Question: Emma can run all-around two arenas in 20 hours. If it takes Fernando twice as long to run his course, what's the total time it takes both of them to run all around the two arenas?
Answer: If it takes Emma 20 hours to run all around the two arenas, it takes Fernando 2 * 20 = 40 hours to run the same distance. Together, they take a total of 40 + 20 = 60 hours to run all around the arenas. The answer is 60.
[Question]Paulo wants to get a burger meal that costs $6. Aside from that, he also wants to get a soda which costs 1/3 as much as the burger meal. While on the counter, Jeremy asked Paulo to get him 2 of each item Paulo is going to get. How much will they be charged for their orders combined?
[Answer]They are to order a total of 3 burger meals and 3 sodas for Paulo and Jeremy. The cost of a soda is $6 / 3 = $2. So, the 3 sodas will amount to $2 / soda x 3 sodas = $6. The 3 burger meals will amount to $6 / burger x 3 burgers = $18. Hence, the total cost for their orders is $6 + $18 = $24. The answer is 24.
Q: There are 516 cars in a parking lot. One-third are blue, one-half are red, and the rest are black. How many black cars are on the lot?
A: Blue = 516 * (1 / 3) = 172 cars. Red = 516 * (1 / 2) = 258. Black = 516 - (172 + 258) = 86. There are 86 black cars on the lot. The answer is 86.
Question: Christine makes money by commission rate. She gets a 12% commission on all items she sells. This month, she sold $24000 worth of items. Sixty percent of all her earning will be allocated to her personal needs and the rest will be saved. How much did she save this month?
Answer: This month, Christine earned a commission of 12 / 100 x $24000 = $2880. She allocated 60 / 100 x $2880 = $1728 on her personal needs. Therefore, she saved $2880 - $1728 = $1152 this month. The answer is 1152.
[Question]Lindsey bought 2 exercise bands to intensify her workout. Each band adds an extra 5 pounds of resistance to her workout. If she doubles up both sets of bands and places them around her legs and picks up a 10-pound dumbbell, how much weight will she squat?
[Answer]She has 2 exercise bands that are both 5 pounds of resistance so that's 2 * 5 = 10 pounds. She has a pair of 10 - pound dumbbells so that's 2 * 10 = 20 pounds. With both the bands and dumbbells, she will squat 10 + 20 = 30 pounds. The answer is 30.
[Question]Valerie's cookie recipe makes 16 dozen cookies and calls for 4 pounds of butter. She only wants to make 4 dozen cookies for the weekend. How many pounds of butter will she need?
[Answer]
Her original recipe makes 16 dozen and she only needs 4 dozen so she needs to reduce the recipe by 16 / 4 = 4. For 4 dozen cookies, she needs to reduce her recipe by 4 and the original called for 4 pounds of butter so she now needs 4 / 4 = 1 pound of butter. The answer is 1.