For your info, this question is a Sec One question. Frankly, I'm quite surprised at this fact. In anycase, I didn't use algebra to solve this problem - that felt unfair. Anyway intuition should prove helpful in tackling this question.There are three classes in a school, each with the same number of students. The fraction of girls in class A is the same as the fraction of boys in class C. Also, class B has one-fifth of all the boys in the school.
What is the fraction of girls in the school ?
Sunday, May 20, 2007
Interesting Maths Problem
I just encountered an interesting maths problem which I would like to share.
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4 comments:
The answer is 1r4r5 / 3 = 9/5 / 3
It is 3/5. Not extremely hard question. Just out of the box.
Unfortunately your answer is wrong.
hah. 7/12 lah. =X
I know I already got it wrong. =(
Yes the answer is 7/12.
Yay !
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