If each of 4 subsidiaries of Corporation R has been granted a line of credit of $710,500 and each of the other 3 subsidiaries of Corporation R has been granted a line of credit of $112,000, what is the average (arithmetic mean) line of credit granted to a subsidiary of Corporation R?  Answers:
A) $1,568,000
B) $454,000
C) $406,000
D) $313,600
E) $116,000
My take is B.   (710500*4 + 112000*3)/7= 
<gadget id="calculator">(710500*4 + 112000*3)/7</gadget>
<output>454_000</output>
454000
<result>B</result>
If each of 4 subsidiaries of Corporation R has been granted a line of credit of $710,500 and each of the other 3 subsidiaries of Corporation R has been granted a line of credit of $112,000, what is the average (arithmetic mean) line of credit granted to a subsidiary of Corporation R?