Cheaper skis

In Tesco, skis for 9,000 CZK were reduced by 30 percent, in Makro they were reduced by 20 percent first, and after a week by another 10 percent. Where were the skis cheaper in the end?

Correct answer:

x = Tesco

Step-by-step explanation:

a=9000 Kc r1=100%30%=110030=0.7  T=r1 a=0.7 9000=6300 Kc  r2=100%20%=110020=0.8 r3=100%10%=110010=0.9 r4=r2 r3=0.8 0.9=2518=0.72  M=r3 a=0.9 9000=8100 Kc  M>T r4>r1  x=Tesco



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arithmeticbasic functionsUnits of physical quantitiesGrade of the word problem

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