Mr. Alvarez spends $36 on diesel fuel each week. If the cost of diesel fuel is $3 per gallon, how many gallons of diesel fuel does Mr. Alvarez use in two weeks?
Let's think: In a week, Mr. Alvarez uses $36 / $3 = 12 gallons a week. So in two weeks, he uses 12 x 2 = 24 gallons.. The answer is: 24.

Coby went on a road trip. He is traveling from Washington to Nevada but he needs to stop in Idaho which is 640 miles away from Washington and 550 miles away from Nevada to pick up some friends. If Coby is traveling at a speed of 80 miles per hour going to Idaho and at a speed of 50 miles per hour from Idaho to Nevada, how many hours did it take for him to arrive at the destination?
Let's think: The estimated time of arrival from Washington to Idaho is 640 / 80 = 8 hours. So, the estimated time of arrival from Idaho to Nevada is 550 / 50 = 11 hours. Therefore, It took him 11 + 8 = 19 hours to arrive at the destination.. The answer is: 19.

Josue planted a tree in his backyard that grows at the rate of 2 feet per week. If the tree is currently 10 feet tall, what would be the tree's total height after 4 months (assuming each month is 4 weeks long)?
Let's think: Since a month has four weeks, the tree will increase its height by 2 feet for 4 * 4 = 16 weeks after four months of growing. Since the tree grows at 2 feet per week, after 16 weeks, the tree would have increased its height by 2 * 16 = 32 feet. If the tree is currently 10 feet tall, its height after four months will be 10 + 32 = 42 feet.. The answer is: 42.

On Tuesday, a fruit vendor sold 2.5 dozen lemons and 5 dozens avocados. What is the total number of fruits that the fruit vendor sold?
Let's think:
Since 1 dozen is equal to 12, then the vendor sold 2.5 x 12 = 30 lemons. While he sold 5 x 12 = 60 avocados. So, the fruit vendor sold a total of 30 + 60 = 90 fruits.. The answer is: 90.