This is Lim family's blog. That's all, we've got nothing else to say.
Saturday 11 July 2009
Photos from South Africa
My sister just came back from South Africa, from the IWYMIC maths competition. The teams from RI & RGS won 1 Gold, 2 Silvers, 4 Bronzes and 1 Merit for individual awards. My sister won a Silver medal. Some photos taken are below:
3 comments:
Anonymous
said...
Please help
Paul and Peter picked eggs from conveyor belts, A and B, respectively at the same time. If Paul picked 36 eggs per minute and Peter picked 18 eggs per minute, there would be 144 eggs left on the Conveyor belt A, when all the eggs were picked from Conveyor belt B. If Peter picked 40 eggs per minute and Paul picked 20 eggs per minute, there would be 432 eggs left on Conveyor belt A when all the eggs were picked from conveyor belt B. How many eggs were there on the 2 conveyor belts?
3 comments:
Please help
Paul and Peter picked eggs from conveyor belts, A and B, respectively at the same time. If Paul picked 36 eggs per minute and Peter picked 18 eggs per minute, there would be 144 eggs left on the Conveyor belt A, when all the eggs were picked from Conveyor belt B. If Peter picked 40 eggs per minute and Paul picked 20 eggs per minute, there would be 432 eggs left on Conveyor belt A when all the eggs were picked from conveyor belt B. How many eggs were there on the 2 conveyor belts?
_____+--- 432 ----+
A [ | | | |144]
B [ | ]
(432-144)*(6/3)+144=720
LJ
Format goes haywire.
432 is from 2nd to last box (4 boxes)
LJ
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