posted by Pablo .
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?
30ab = c
c hours * a cust/hr * $30/b cust = 30ac/b $
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
I also came to that answer, but it isn't one of the choices. The choices are:
Steve's answer is right and is one of your choices.
Sorry -- my answer is wrong.