There were thirty students in the class and 60% of them were in the mathematics club. How many students were not in the math club

Question

This question has to do with ratios and finding out another number with percentages.

Answer 1

1% = .01 (percent comes from the Latin for 'for each hundred')

 

100% is the whole thing and is equal to 1.

 

So if 60% were in the club you know that 40% were not in the club.

 

40% = .40 (forty hundredths)

so you multiply 

 

.40 x 30 students = 12 students were not in the club.

 

If you think about it just under half of the students were not in the club which goes along with your answer as well.