21. |
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Muchausen was told to find the number of soldiers in the enemy's camp. He flew to the enemy's camp very quickly on a cannonball then returned on foot. The round trip took 1 hour and 10 minutes. To make sure he counted soldiers correctly, he made a second trip. This time he traveled on a cannon ball to the enemy's camp and returned at the same speed by jumping on a cannonball as it was fired from the enemy's camp. The round trip took 20 minutes. How much time would Muchausen spend if he walked? |