Stephen made 10 round trips up and down a 40,000 foot tall mountain. If he reached 3/4 of the mountain's height on each of his trips, calculate the total distance he covered.
Thoughts? Step-by-step reasoning:
Up a mountain, Stephen covered 3 / 4 * 40000 = 30000 feet. Coming down, Stephen covered another 30000 feet, making the total distance covered in one round to be 30000 + 30000 = 60000. Since Stephen made 10 round trips up and down the mountain, he covered 10 * 60000 = 600000.
Thus, the answer is 600000.