The decision-maker decided that chosen washing machine must reach at least
800 rounds per minute and the price must be lower than 20 000 CZK.
According to this demand we can disjoin the set of all alternatives to acceptable and not acceptable (red):
 

A1	1600	0,89	39	5	39990
A2	1000	1,05	54	5	22990
A3	1000	1,1	59	5	19990
A4	850	1,15	59	5	17990
A5	1200	1,05	52	5	21590
A6	500	1,3	72	5	14490
A7	1200	0,94	41	5,5	27990
A8	800	1,3	72	5	14390
A9	500	1,2	59	3,5	16390
A10	850	1,25	74	5	15990

Acceptable variants are than: A2, A3,A7,A9. We can continue calculations only with this acceptable set of variants:
 

A3	1000	1,1	59	5	19990
A4	850	1,15	59	5	17990
A8	800	1,3	72	5	14390
A10	850	1,25	74	5	15990