You have business on the eighth floor of a 10-story building. It took you 48 seconds to make your way from the first floor to the fourth. If you keep moving at the same speed, how long will it take you to reach the eighth floor from the fourth.
To solve this puzzle, you must base the time it takes to climb the rest of the way on the amount of time it took to make it to the fourth floor. How many flights of stairs did you climb between the first and fourth floors again?
If you start on the first floor, you'll travel through the second-, third-, and fourth-floor stairs before you reach the fourth floor. When you continue on from the fourth floor, you'll have to climb the fifth-, sixth-, seventh-, and eighth-floor stairs before you reach the eighth floor.
There are three flights of stairs between the first and fourth floors. Between the fourth floor and the eighth floor, you have an additional four flights of stairs to climb. If you've got all that, then you just have to do the math.
You're on the fourth floor already, so you've already come half the way to the eighth floor... Or have you?
You're right! Going from the first to the fourth floor means you climbed a total of three flights of stairs. Going from the fourth to the eight floor means you will have to go up an additional four flights of stairs.
Die Lösung ist: 64.
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