The table given below shows the marked price and selling price of 6 articles.
| Articles | Marked price | Selling price |
| A1 | 650 | 550 |
| A2 | 500 | 350 |
| A3 | 550 | 400 |
| A4 | 350 | 300 |
| A5 | 750 | 550 |
| A6 | 250 | 200 |
Discount = Marked price - Selling price
J1 = The value of average of discount of article A1, A2, A3 and A4.
J2 = The difference between marked price and selling price of all articles.
What is the value of (J2 - J1)?
1
592.5
2
552.5
3
576.5
4
587.5