Part of Stella's job is to restock the toilet paper in each of the 6 bathrooms at the bed and breakfast. She stocks 1 roll a day, every day of the week. She buys the toilet paper in bulk, and each pack contains 1 dozen rolls. After 4 weeks, how many packs of toilet paper dozen Stella buy? Give the rationale and then the answer.
Let's think step by step. She stocks one roll in each of the 6 bathrooms, every day of the week so that 6 * 7 = 42 rolls a week. She restocks 42 rolls a week so after 4 weeks that's 42 * 4 = 168 rolls. The bulk toilet paper comes 1 dozen rolls in a pack and she needs 168 rolls so she needs 168 / 12 = 14 dozen.. The answer is: 14.

Sarah is buying Christmas presents for her family. She starts her shopping with a certain amount of money. She buys 2 toy cars for $11 each for her sons. She buys a scarf for $10 for her mother. Then she buys a beanie for $14 for her brother. If she has $7 remaining after purchasing the beanie, how much money did she start with? Give the rationale and then the answer.
Let's think step by step. Before purchasing the beanie, Sarah has $7 + $14 = $21. Before purchasing the scarf, Sarah has $21 + $10 = $31. The total cost of the toy cars is 2 * $11 = $22. Before purchasing the toy cars, Sarah has $31 + $22 = $53.. The answer is: 53.

Christi saw twice as many black bears as white bears and 40 more brown bears than black bears in a national park. If the number of black bears in the park is 60, calculate the population of bears in the park. Give the rationale and then the answer.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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Let's think step by step. If there are 60 black bears in the park and 40 more brown bears than black bears, there are 60 + 40 = 100 brown bears. The number of black and brown bears in the park is 100 + 60 = 160. Twice the number of black bears as white bears means 60 / 2 = 30 white bears. The population of bears in the national park is 30 + 160 = 190.. The answer is: 190.