Posted by Pablo on Tuesday, August 13, 2013 at 1:14pm.
At a certain grocery store, "a" customers each spend an average of $30 every "b" hours. How much revenue , in dollars, does the store collect in "c" hours?

math  Ms. Sue, Tuesday, August 13, 2013 at 1:24pm
30ab = c

math  Steve, Tuesday, August 13, 2013 at 1:27pm
c hours * a cust/hr * $30/b cust = 30ac/b $
check:
If 10 customers spend $300 in 5 hours, that's $60/hr, so in 3 hours that would be $180.
30ac/b = 30*10*3/5 = 180

math  Anonymous, Tuesday, August 13, 2013 at 1:29pm
I also came to that answer, but it isn't one of the choices. The choices are:
(A) 30c/ab
(B) bc/30a
(C) 30bc/a
(D) 30ac/b
(E) 30b/ac

math  Anonymous, Tuesday, August 13, 2013 at 1:29pm
thanks Steve!

Steve is right  Ms. Sue, Tuesday, August 13, 2013 at 1:31pm
Steve's answer is right and is one of your choices.
Sorry  my answer is wrong.
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