Question: Julia's internet speed is 20 MBps (megabytes per second). How many songs she can download in half an hour if the size per song is 5MB?
Answer: 1 hour has 60 minutes, therefore 1 / 2 hour has 1 / 2 * 60 = 30 minutes. 1 minute has 60 seconds, therefore 30 minutes has 30 * 60 = 1800 seconds. If Julia's internet speed is 20MBps and each song has a size of 5MB, then it would take 5 / 20 = 1 / 4 seconds to download one song. If it takes 1 / 4 seconds to download 1 song, then in 1800 seconds, Julia could download 1800 / (1 / 4) = 1800 * 4 = 7200 songs. The answer is 7200.

Question: A window has 4 glass panels each. A house has 6 double windows downstairs and 8 single windows upstairs. How many glass panels are there in the whole house?
Answer: There are 6 x 2 = 12 windows downstairs. There are 12 + 8 = 20 windows in the whole house. There are 20 x 4 = 80 glass panels in the whole house. The answer is 80.

Question: Doc's Pizza contains 6 pieces of pizza. Ten fourth-graders each bought 20 pizzas from Doc's Pizza and put them in their box. How many pieces of pizza are the children carrying in total?
Answer: If Each fourth - grader bought 20 pizzas, with each pizza having 6 pieces, each fourth - grader had a total of 20 * 6 = 120 pieces of pizza in their box. Ten fourth - graders each bought 20 pizzas, and since the 20 pizzas had 120 pieces, the total number of pizzas in the students' boxes is 120 * 10 = 1200 pieces. The answer is 1200.

Question: John and his two brothers decide to split the cost of an apartment. It is 40% more expensive than John's old apartment which costs $1200 per month. How much does John save per year by splitting the apartment compared to living alone?
Answer:
His old apartment cost 1200 * 12 = $14,400 per year. His new apartment 1200 * 1.4 = $1680 per month. That means it cost 1680 / 3 = $560 per month. So it cost 560 * 12 = $6720. So he saves 14400 - 6720 = $7680. The answer is 7680.