The table given below shows the cost price and selling price of 5 different articles.
| Article | Cost price | Selling price |
| A | 500 | 600 |
| B | 700 | 750 |
| C | 600 | 800 |
| D | 400 | 700 |
| E | 300 | 800 |
What is the ratio of total cost price to total selling price of all articles?
1
49 ∶ 72
2
50 ∶ 39
3
37 ∶ 50
4
50 ∶ 73