Notebook purchase rounding

Lucy bought a notebook for CZK 28.60 and a notebook for CZK 14.50. How many crowns did the saleswoman round off the price of her purchase? How many CZK did she return to fifty crowns?

Final Answer:

x =  43 Kc
y =  7 Kc

Step-by-step explanation:

a=28.60 Kc b=14.50 Kc  c=a+b=28.6+14.5=10431=43.1 Kc  x=[c]=[43.1]=43 Kc
y=50x=5043=7 Kc



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arithmeticUnits of physical quantitiesGrade of the word problem

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