About 6 out of 10 people entering a community college need to take a class. If there are 990 entering students, how many will probably need to take the class?

Question

please help me solve this question 

Answer 1

Ariel,

"6 out of 10 people" means the ratio of class:no_class is 6:4

 

990/10 = 99, the smallest the "class" and the "no_class" add up to is 10. And, generally, the total divides with that nicely, as in this case.

 

99(6) = 594 ----------- probably class

99(4) = 396 ------------------ probably no class

Total  = 990

 

I hope this helps