Which statement is correct?

1. Material expenses are opening value of stock plus purchases less returns inwards.

2. Material expenses are opening value of stock plus purchases plus returns inwards.

3. Material expenses are opening value of stock plus purchases less returns outwards.

4. Material expenses are opening value of stock less purchases plus returns outwards.

350,000.00 EUR and sells half thereof at a selling price which is 180 % of the cost of purchase. Other operating expenses are depreciation at 80,000.00 EUR and labour at 50,000.00 EUR. How much is the gross profit?
1. 300,000.00 EUR.
2. 500,000.00 EUR.
3. 140,000.00 EUR.
4. 150,000.00 EUR.