it takes 24 seconds to go upstairs in the lift from the first floor to the
问题描述：
it takes 24 seconds to go upstairs in the lift from the first floor to the
fourth.how many seconds does it take to go from the first floor to the twelfth floor?
答
翻译如下：
“坐电梯从一楼到四楼花24秒,那么从一楼到12楼要用多少秒呢?”
答案：
“72 seconds ”