:14:07
All right, everyone take a seat.
:14:10
Spread out.
There's plenty of room.
:14:14
If you like, you may remove
your coats.
:14:18
You'll find paper and pencils
in your desks.
:14:21
The paper is stamped
and cannot be replaced.
:14:24
If you make a mistake,
simply correct it.
:14:29
Here's your problem:
:14:32
We have a roll of copper wire
:14:35
520 meters long.
:14:40
520 meters.
:14:43
Three-quarters of it are cut off.
:14:49
Of the remainder, we cut off
:14:53
four-fifths.
:14:57
How many centimeters of wire
are left on the roll?
:15:03
That's it.
:15:05
One hour's time.
:15:10
You may begin.