Hi,


Here is the solution:

[youtube=http://www.youtube.com/watch?v=0Zi0sFTZ-Cw][/youtube]


http://www.matharena.com.sg
http://www.learnbywatching.org

Thank you for your response. Just realised the mistake in the question. Very sorry for that

Hello,

I need help with this question.

Peter bought some sweets and gave 1/3 of them to John. John bought some beads and gave 1/3 of them to Peter. Peter lost 32 sweets and John lost 26 beads. After that, the number of sweets and beads Peter had were in the ratio 8:5 and the number of sweets and beads John had were in the ratio 3:2. How many beads did Peter buy

Thank you,
Tan Lip Guo

Hello,

AFAIK, pupils can take math competitions from P4. It is also possible to start training early, probably from P2 or P3 onwards.

Tan Lip Guo

Hi I am Lip Guo. I need help with this question:

For a mathematics test, the average score for the class is 80. The average score for the boys is 78 while that for the girls is 82.5. What is the ratio of the number of boys to the number of girls?

Thank you in advance.