Barrels

Peter has 42 barrels. One-sixth of them are filled with lemonade, one third is filled with wine and half is empty. Calculate how many barrels are with each filling.

Correct result:

a =  7
b =  14
c =  21

Solution:

n=42 a=16 n=16 42=7
b=13 n=13 42=14
c=12 n=12 42=21 x=16+13+12=1



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