On a highway, the total number of vehicles passing is 300. If the number of cars on the highway is twice the number of trucks, find out the total number of trucks on the highway? Give the rationale and then the answer.
Let's think step by step. If we assume that the number of trucks on the highway is t, the number of cars on the highway will be 2 * t = 2t. The total number of cars and trucks on the road is 2t + t = 300. The number of vehicles on the road is 3t = 300. The are t = 300 / 3 trucks on the highway. This means there are t = 100 trucks on the road.. The answer is: 100.

Samuel is driving to San Francisco's Comic-Con in his car and he needs to travel 600 miles to the hotel where he made a reservation. At first, he drives at 50 miles/hour for 3 hours straight, then he speeds up to 80 miles/hour for 4 hours. How far is he from the hotel? Give the rationale and then the answer.
Let's think step by step. At first at 50 miles / hour he travels 50 miles / hours * 3 hours = 150 miles. After that, he speeds up, traveling 80 miles / hours * 4 hours = 320 miles. He travels a total of 150 miles + 320 miles = 470 miles. He is 600470 = 130miles from the hotel.. The answer is: 130.

Gabby planted a watermelon vine, a peach tree, and two plum trees in the spring. Over the summer, the plants grew and produced fruit. She only got one watermelon to grow, but she got twelve more peaches than that, and three times that number of plums. How many pieces of fruit did Gabby get to pick that summer? Give the rationale and then the answer.
Let's think step by step. Gabby's peach tree grew 12 + 1 = 13 peaches. Her plum trees grew 13 * 3 = 39 plums. Thus, Gabby got 1 + 13 + 39 = 53 pieces of fruit to pick.. The answer is: 53.