Lanie has been sick and was only able to work 4/5 of her usual 40-hour week. If her hourly rate is $15, how much was her salary for that week? Give the rationale and then the answer.
Let's think step by step. Lanie was only able to work for 40 * 4 / 5 = 32 hours in that week. Thus, her salary was 15 * 32 = $480.. The answer is: 480.

Bert's golden retriever has grown tremendously since it was a puppy. At 7 weeks old, the puppy weighed 6 pounds, but doubled in weight by week 9. It doubled in weight again at 3 months old, and doubled again at 5 months old. Finally, the dog reached its final adult weight by adding another 30 pounds by the time it was one year old. What is the dog's full adult weight, in pounds? Give the rationale and then the answer.
Let's think step by step. At 7 weeks old, the puppy weighed 6 pounds, but doubled in weight by week 9 to reach a weight of 6 * 2 = 12 pounds. It doubled in weight again at 3 months old to reach a weight of 12 * 2 = 24 pounds. It doubled in weight again at 5 months old to reach a weight of 24 * 2 = 48 pounds. And it reached its full adult weight by adding another 30 lbs to reach a final weight of 48 + 30 = 78 pounds.. The answer is: 78.

Sidney does 20 jumping jacks on Monday, 36 on Tuesday, 40 on Wednesday, and 50 on Thursday. Brooke does three times as many jumping jacks as Sidney. How many jumping jacks did Brooke do? Give the rationale and then the answer.
Let's think step by step. Sidney does 20 on Monday + 36 on Tuesday + 40 on Wednesday + 50 on Thursday = 146 jumping jacks. Brooke does 3 x 146 = 438 jumping jacks.. The answer is: 438.