Four small panda bears and five bigger panda bears eat 25 pounds and 40 pounds of fresh bamboo sprouts every day, respectively. How many pounds of bamboo do the 9 pandas eat in a week? Give the rationale and then the answer.
Let's think step by step. The small panda bears eat a total of 4 x 25 = 100 pounds of bamboo every day. The bigger panda bears eat a total of 5 x 40 = 200 pounds of bamboo every day. So, the 9 pandas eat a total of 100 + 200 = 300 pounds of bamboo every day. Therefore, they eat a total of 300 x 7 = 2100 pounds in a week.. The answer is: 2100.

Tim drops a ball off the roof of a 96-foot tall building. The ball bounces to half the height from which it fell on each bounce. How high will it bounce on the fifth bounce? Give the rationale and then the answer.
Let's think step by step. On the first bounce, it will reach a height of 96 / 2 = 48 feet. On the second bounce, it will reach a height of 48 / 2 = 24 feet. On the third bounce, it will reach a height of 24 / 2 = 12 feet. On the fourth bounce, it will reach a height of 12 / 2 = 6 feet. On the fifth bounce, it will reach a height of 6 / 2 = 3 feet.. The answer is: 3.

Five coworkers were talking during the lunch break. Roger, the oldest one, said that he has the same amount of experience in years as all four of the others combined and that his retirement should come when he accumulates 50 years of experience. Peter said that when he came to the company his daughter was 7 years old, and now she is 19 years old. Tom then said he has twice as many years of experience as Robert. Robert said that he has 4 years of experience less than Peter but 2 more years of experience than Mike. How many more years does Roger have to work before he retires? Give the rationale and then the answer.
Let's think step by step. Peter has 19 – 7 = 12 years of experience. Robert has 12 – 4 = 8 years of experience. Mike has 8 – 2 = 6 years of experience. Tom has 2 * 8 = 16 years of experience. Roger has 12 + 8 + 6 + 16 = 42 years of experience. Roger has to work another 50 – 42 = 8 years before he retires.. The answer is: 8.