Candies

There are two types of candies in the store at 20 CZK/kg and 80 CZK/kg. How much will be cost a mix if we mix 22kg cheaper and 4kg more expensive candies?

Correct result:

a =  760 Kc
x =  29.23 Kc/kg

Solution:

a=(22 20+4 80)=760 Kca=(22 \cdot \ 20+4 \cdot \ 80)=760 \ \text{Kc}
x=a/(22+4)=760/(22+4)=38013=29.23 Kc/kgx=a/(22+4)=760/(22+4)=\dfrac{ 380 }{ 13 }=29.23 \ \text{Kc/kg}



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