Each customer of a networking company subscribes to one of two plans: Plan A or Plan B. Plan A costs $75 per month and Plan B costs $250 per month per customer. If the company’s average revenue per customer per month is $200, then what percent of the company's revenue comes from customers with Plan A? Choose the correct answer:
A) 10.7%  B) 30%  C) 37.5%  D) 56.25%  E) 75%
If there are A customers with plan A, and B customers with plan B, then the total revenue is $75A + $250B.   Since the average customer pays $100, we know that   $200 = ($75A + $250B) / (A + B)   $200(A + B) = ($75A + $250B)   $200A + $200B = $75A + $250B   $125A = $50B   A = 2/5*B.   Since there are 2/5 times as many $75 clients as $250 clients, for every $250 received from Plan B customers, 2/5*($75) = $30 is received from Plan A customers, and the percent of revenue from customers with Plan A is:   $30/($30 + $250) = $30/$280 = 10.7%.   The correct answer is choice (10.7%).
<result>A</result>
Each customer of a networking company subscribes to one of two plans: Plan A or Plan B. Plan A costs $75 per month and Plan B costs $250 per month per customer. If the company’s average revenue per customer per month is $200, then what percent of the company's revenue comes from customers with Plan A?