Sunday, February 27, 2011

Seniors & juniors algebra word problem

The original question comes from


The total number of girls in the combined junior and senior classes is equal to the number of boys in those two classes. If the senior class has 400 students and the junior class has 300 students, and if the ratio of boys to girls in the senior class is 5:3, what is the ratio of boys to girls in junior class?


Saturday, February 26, 2011

eBook - Model Approach For Primary School Mathematics

Dear Readers,

I just published a eBook in This ebook features 100 upper primary school problem sum questions with 'Model' answers. It costs only US$7.99.

Model Approach for Primary School Mathematics

Hope you find this useful. Thanks

Primary 5 Problem Sum


2/9 of the runners in a race are boys.3/7 of the remaining runners are men.1/4 of the rest are girls. There are 42 more women than girls. How many runners are there in the race?