http://www.math-problem-solving.com/angles-gcse-higher-question.html

Not sure whether is this the right place to post my questions.

Nevertheless, would appreciate if you guys could help me with my question !

The question goes like this...

Angei had a bag of beads in 12 different colours, 4 different sizes and 3 different shapes.She was able to group them according to colour, size of shape equally.

If the total number of beads was below 80,what was the greatest possible number of beads in the bag?

Appreciate if you guys can help !

Thanks in advance !