Socks

One pair of socks worth CZK 27. Set of 3 pairs of these socks are sold with 10% discount. How many we will pay CZK for two offered sets of socks?

Result

x =  145.8 Kc

Solution:

p=27 s=3⋅ p⋅ (1−10/100)=3⋅ 27⋅ (1−10/100)=72910=72.9 x=2⋅ s=2⋅ 72.9=7295=145.8 Kcp=27 \ \\ s=3 \cdot \ p \cdot \ (1-10/100)=3 \cdot \ 27 \cdot \ (1-10/100)=\dfrac{ 729 }{ 10 }=72.9 \ \\ x=2 \cdot \ s=2 \cdot \ 72.9=\dfrac{ 729 }{ 5 }=145.8 \ \text{Kc}

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