Posted by Alex L. on .
About 9 out of 10 adults think it is a good idea to exercise regularly. But the ones who think it is a good idea, only 1 in 6 actually exercises at least 3 times a week. At this rate, how many of the 300 employees in our company exercise regularly?
What I did so far was write this:
9/10 = x/300
x=270

Ratio and proportion 
Ms. Sue,
That's a good start.
1/6 = x/270 
Ratio and proportion 
drwls,
The answer depends upon how one defines "regularly". If they mean "at least three times a week", the answer is
(9/10)*(1/6)*300 = 45 
Ratio and proportion 
Damon,
(1/6)(9/10)(300)
= 45
not really a proportion problem 
Ratio and proportion 
Alex L.,
How do I state this question?
Is it..
 At least 45 employees exercise regularly out of that rate 
Ratio and proportion 
Damon,
About 45 employees in the company exercise regularly

Ratio and proportion 
Alex L.,
It's because of the different rates that confuse me.

Ratio and proportion 
Damon,
well, 9/10 of the 300 want to do it
and (1/6) of that (9/10) actually do it
so 1/6 * 9/10 * 300