[Question]Mr. Isaac rides his bicycle at the rate of 10 miles per hour for 30 minutes. If he rides for another 15 miles, rests for 30 minutes, and then covers the remaining distance of 20 miles, what's the total time in minutes took to travel the whole journey?
[Answer]If in one hour he covers 10 miles and rides for 15 miles at the rate of 10 miles per hour, then the time taken for the 15 miles will be 15 / 10 = 1.5 hours. The time in minutes is 1.5 * 60 = 90 minutes. The time taken for the remaining 20 miles at a rate of 10 miles per hour is 20 / 10 = 2 hours. The time in minutes is 2 * 60 = 120 minutes. The total time taken for the whole journey is the first 30 minutes + 90 + 30 minutes for resting + 120 minutes = 270 minutes. The answer is 270.

[Question]It takes a duck 40 days to fly to the south during winter, twice as much time to fly to the north during summer, and 60 days to travel to the East during spring. How many days is the duck flying during these seasons?
[Answer]If the duck takes 40 days to fly to the south during winter and twice as much time to fly to the north during summer, it takes 40 * 2 = 80 days to travel to the north. The total time it takes to travel to the south and the north during both seasons is 80 + 40 = 120 days. The duck also takes 60 days to travel to the East during spring, making the total time it travels during all the seasons to be 120 + 60 = 180. The answer is 180.

[Question]If Alice purchased 3600 acorns for nine times the price Bob paid, and Bob paid $6000 for his acorns, how much money did Alice pay for each acorn?
[Answer]Nine times the price Bob paid for his acorns is 9 * $6000 = $54000. If Alice purchased 3600 acorns for nine times the price Bob paid, she paid $54000 / 3600 = $15 for each acorn. The answer is 15.

[Question]Maynard's dog dug 8 holes in the lawn. Maynard filled in 75% of the hole with dirt. How many holes remain unfilled?
[Answer]
75% of the 8 holes in Maynard's lawn, or (75 / 100) * 8 = 6 holes, were filled in with dirt. Of the original 8 holes, 8 - 6 = 2 holes remain unfilled. The answer is 2.