median
don steward
mathematics teaching 10 ~ 16

Sunday, 19 December 2010

trading

lollies, bars and chews









(1)

3 chews = 2 bars
5 lollies = 7 bars
how many chews is 1 lolly worth?


(2)

5 bars = 4 chews
9 lollies = 6 chews
how many lollies per bar?

No comments: