|
|
|
|
|
|
by kilburn
4787 days ago
|
|
|
I didn't see the picture at first, and reasoned just as you exposed. However, the teacher corrects it by writing "4 = 20". This is plainly wrong and with no possible explanation, since following the above reasoning, cutting in 4 pieces would require: 10 + 10 / 2 + (10 / 2) / 2 = 17.5 minutes. |
|
|