If the first skyscraper was built 100 years ago, how many years in the future will it be 5 years before its 200th anniversary of being built? Give the rationale and then the answer.
Let's think step by step. First, we perform 200 - 5 = 195 to find the number of total years from the building being built that we're looking for. Then, we subtract out the 100 years that have already passed to determine the remaining amount of time, performing 195 - 100 = 95 years in the future.. The answer is: 95.

Kevin's fish tank was leaking slowly at a rate of 1.5 ounces per hour. He planned to go to the fish tank store later that day to get a new tank, but it may be as long as 12 hours before he can return home with the new tank. Therefore, to collect the leaking fluid over that time, he placed a bucket underneath the tank that could hold twice the amount of fluid that would leak over 12 hours. What size bucket, in ounces, did he use? Give the rationale and then the answer.
Let's think step by step. Over 12 hours, a leak of 1.5 ounces per hour for 12 hours would generate 1.5 * 12 = 18 ounces. A bucket that can hold twice the volume leaked is 18 * 2 = 36 ounces.. The answer is: 36.

Brian loves watching animal videos online. He watches a 4-minute video of cats. He then watches a video twice as long as the cat video involving dogs. He finishes up his video watching for the day by watching a video on gorillas that's twice as long as the previous two videos combined. How many minutes does Brian spend watching animal videos? Give the rationale and then the answer.
Let's think step by step. Brian begins by watching a 4 - minute video, and since the second video is twice as long that means the second video is 4 * 2 = 8 minutes. The first two videos combined therefore for a 4 + 8 = 12 minute run time. Since the third video is twice as long as the first two videos put together, that means it is 12 * 2 = 24 minutes in length. The total length of time spent is therefore 24 + 12 = 36 minutes.. The answer is: 36.