6) Francesco is interested in a television model that is sold in Landscape supermarkets for 800 Euro. He then notices that in Ipersfera stores, the same model is sold at a $15 \%$ discount and they offer a $10 \%$ discount to all customers named Francesco. How much does he spend by buying the television in Ipersfera stores?
(A) 600 Euro,
(B) 612 Euro,
(C) 680 Euro,
(D) 720 Euro,
(E) 790 Euro
6. The answer is $\mathbf{( B )}$.

The price of the television at Ipersfera stores is $800 \cdot(1-0.15)$ euros $=680$ euros. To this amount, the 10% discount offered by Ipersfera to customers named Francesco must be applied, so the actual cost of the television for Francesco is $680 \cdot(1-0.1)$ euros $=612$ euros.

Note that the operations performed do not correspond to reducing the price of the television offered by Landscape by 25% because in that case, the 10% discount would be calculated on 800 euros and not on the 680 euros corresponding to the unsold price of Ipersfera.