Use this information below to answer this question.

Trading Account (Extract)

.................N.............................N......
Opening stock...19500........Sales............96 000..
Add purchases...68700.................................
................88200.................................
Less closing stock..?.................................
Cost of goods sold..?.................................
Gross profit C/D....?.................................
....................?..........................?......
The gross profit margin is 20%
Determine the closing stock