The following table shows the amount (in Rs. '000) received by a store-owner by selling 5 different brands of milk during a given month.
| Brand | Amount |
| B1 | 62 |
| B2 | 56 |
| B3 | 72 |
| B4 | 41 |
| B5 | 69 |
The price per litre of milk of all the brands is Rs. 40 per litre. How many litres of milk, of all the brands taken together, were sold by the store during that month?
1
7800 litres
2
7500 litres
3
7200 litres
4
8100 litres