median
don steward
mathematics teaching 10 ~ 16

Sunday, 9 December 2007

big cans

1)
when a can of soup is half full it weighs 5kg
when it is one third full it weighs 4kg
what is the weight of a full can?

2) when a can of soup is half full it weighs 15kg
when it is three quarters full it weighs 20kg
what is the weight of a full can?



3) when a can of soup is half full it weighs 8kg
when it is two thirds full it weighs 10kg
what is the weight of a full can?

4) when a can of soup is half full it weighs 8kg
when it is two fifths full it weighs 7kg
what is the weight of the full can?

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