In a national park, the number of redwoods is 20% more than the number of pines. If there are 600 pines in the national park, calculate the total number of pines and redwoods that are there. Give the rationale and then the answer.
Let's think step by step. If there are 600 pines, there are 20 / 100 * 600 = 120 more redwoods than pine trees in the national park. In total, there are 120 + 600 = 720 redwoods in the national park. Altogether, there are 720 + 600 = 1320 pines and redwoods in the national park.. The answer is: 1320.

An electronic shop offers smartphones for $300 each, personal computers for $500 more than smartphones, and advanced tablets for the sum of the prices of a smartphone and personal computer. How much do you have to pay to buy one of each of the three mentioned products? Give the rationale and then the answer.
Let's think step by step. The price of a personal computer is $300 + $500 = $800. The price of an advanced tablet would be $300 + $800 = $1100. To buy each of these products, you would have to pay $300 + $800 + $1100 = $2200.. The answer is: 2200.

Marco uses a fifth of an ounce of dry tea leaves to brew his morning cup of tea each day. He buys tea leaves in boxes of 28 ounces. How many weeks of daily tea does Marco get from a box? Give the rationale and then the answer.
Let's think step by step. Marco gets 28 / 1 / 5 = 28 * 5 = 140 cups of tea from a box. At 7 days a week, Marco gets 140 / 7 = 20 weeks of daily tea from a box.. The answer is: 20.