Each chair

Each chair costs twice less than two tables. One table costs 720 Czech crowns. How many crowns are the table and 4 chairs?

Result

x =  3600 Kc

Solution:

s=720 kc z=2⋅ s/2=2⋅ 720/2=720 Kc  x=s+4⋅ z=720+4⋅ 720=3600 Kcs=720 \ \text{kc} \ \\ z=2 \cdot \ s/2=2 \cdot \ 720/2=720 \ \text{Kc} \ \\ \ \\ x=s+4 \cdot \ z=720+4 \cdot \ 720=3600 \ \text{Kc}

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